Daily stock returns problem

I am trying to import commodity futures prices from an XL sheet (filename: CrudeOil.xls..unable to upload the file here since there is no feature to do so. Please find the data pasted below). I am trying to calculate daily, weekly and monthly stock returns from the data in the file using xlsread and plot the data but it is giving me Datenum Failed error (Error using dtstr2dtnummx Failed on converting date string to date number).[Formula for daily stock: log(Price(n)/Price(n-1))]. Could someone please help me find alternative methods of doing this - without getting datenum bugs?

CrudeOil.xls

Date Price 01/02/90 22.88 01/03/90 23.81 01/04/90 23.41 01/05/90 23.07 01/06/90 21.64 01/07/90 22.25 01/08/90 22.9 01/09/90 23.15 01/10/90 23.17 01/11/90 22.36 01/12/90 22.61 01/13/90 22.11 01/14/90 22.78 01/15/90 23.7 01/16/90 22.57 01/17/90 22.34 01/18/90 23.43 01/19/90 24.48 01/20/90 22.56 01/21/90 22.79 01/22/90 22.29 01/23/90 22.69 01/24/90 22.71 01/25/90 23.04 01/26/90 22.44 01/27/90 22.36 01/28/90 22.4 01/29/90 22.11 01/30/90 21.82 01/31/90 22.02 02/01/90 21.88 02/02/90 22.12 02/03/90 22.86 02/04/90 22.46 02/05/90 22.46 02/06/90 22.2 02/07/90 21.87 02/08/90 21.4 02/09/90 21.13 02/10/90 21.81 02/11/90 21.62 02/12/90 21.55 02/13/90 21.19 02/14/90 21.36 02/15/90 21.62 02/16/90 21.3 02/17/90 20.93 02/18/90 20.8 02/19/90 20.42 02/20/90 20.26 02/21/90 20.15 02/22/90 20.07 02/23/90 20.38 02/24/90 20.09 02/25/90 19.6 02/26/90 19.34 02/27/90 19.59 02/28/90 19.85 03/01/90 20.28 03/02/90 20.48 03/03/90 20.36 03/04/90 20.09 03/05/90 20.03 03/06/90 20.34 03/07/90 20.51 03/08/90 20.23 03/09/90 19.78 03/10/90 19.48 03/11/90 19.15 03/12/90 18.32 03/13/90 17.56 03/14/90 18.19 03/15/90 17.76 03/16/90 17.87 03/17/90 17.37 03/18/90 16.95 03/19/90 17.93 03/20/90 17.9 03/21/90 18.6 03/22/90 17.85 03/23/90 17.49 03/24/90 18.5 03/25/90 18.57 03/26/90 18.5 03/27/90 18.76 03/28/90 18.63 03/29/90 17.98 03/30/90 17.98 03/31/90 18.3 04/01/90 18.26 04/02/90 19.01 04/03/90 19.03 04/04/90 18.96 04/05/90 19.73 04/06/90 19.52 04/07/90 19.05 04/08/90 18.89 04/09/90 18.78 04/10/90 18.26 04/11/90 17.51 04/12/90 16.25 04/13/90 16.02 04/14/90 16.12 04/15/90 18 04/16/90 17.88 04/17/90 17.47 04/18/90 17.51 04/19/90 17.09 04/20/90 16.41 04/21/90 16.91 04/22/90 16.65 04/23/90 16.78 04/24/90 16.82 04/25/90 17.39 04/26/90 17.6 04/27/90 17.11 04/28/90 16.64 04/29/90 15.92 04/30/90 15.55 05/01/90 15.43 05/02/90 16.09 05/03/90 16.5 05/04/90 16.15 05/05/90 17.12 05/06/90 16.7 05/07/90 17.18 05/08/90 17.05 05/09/90 16.94 05/10/90 16.73 05/11/90 16.73 05/12/90 16.5 05/13/90 16.49 05/14/90 16.63 05/15/90 17.05 05/16/90 17.45 05/17/90 18.69 05/18/90 18.37 05/19/90 18.67 05/20/90 18.23 05/21/90 18.57 05/22/90 19.07 05/23/90 19.61 05/24/90 19.88 05/25/90 19.84 05/26/90 19.33 05/27/90 20.33 05/28/90 20.07 05/29/90 20.24 05/30/90 20.57 05/31/90 21.59 06/01/90 23.71 06/02/90 23.79 06/03/90 28.73 06/04/90 29.6 06/05/90 26.19 06/06/90 25.69 06/07/90 26.38 06/08/90 27.07 06/09/90 26.7 06/10/90 26.54 06/11/90 27.4 06/12/90 28.65 06/13/90 28.63 06/14/90 28.46 06/15/90 30.52 06/16/90 31.67 06/17/90 31.1 06/18/90 27.36 06/19/90 27.73 06/20/90 26.15 06/21/90 26.96 06/22/90 27.45 06/23/90 27.45 06/24/90 29.3 06/25/90 30 06/26/90 31.51 06/27/90 30.09 06/28/90 30.83 06/29/90 30.29 06/30/90 30.85 07/01/90 31.2 07/02/90 31.79 07/03/90 33.73 07/04/90 33.48 07/05/90 33.18 07/06/90 34.44 07/07/90 36.21 07/08/90 39.05 07/09/90 38.33 07/10/90 39.12 07/11/90 39.77 07/12/90 39.53 07/13/90 37.08 07/14/90 34.43 07/15/90 37.04 07/16/90 36.76 07/17/90 37.87 07/18/90 38.88 07/19/90 40.73 07/20/90 39.3 07/21/90 41.07 07/22/90 39.42 07/23/90 38 07/24/90 39.34 07/25/90 36.03 07/26/90 37.03 07/27/90 33.82 07/28/90 28.46 07/29/90 29.95 07/30/90 30.8 07/31/90 34.35 08/01/90 33.03 08/02/90 35.28 08/03/90 34.93 08/04/90 35.31 08/05/90 35.3 08/06/90 33.95 08/07/90 32.05 08/08/90 32.41 08/09/90 35.48 08/10/90 35.61 08/11/90 33.91 08/12/90 32.08 08/13/90 33.3 08/14/90 31.18 08/15/90 31.05 08/16/90 29.91 08/17/90 31.45 08/18/90 29.5 08/19/90 30.08 08/20/90 30.08 08/21/90 32.35 08/22/90 33.28 08/23/90 33.05 08/24/90 33.28 08/25/90 32.93 08/26/90 29.08 08/27/90 29.4 08/28/90 29.05 08/29/90 27.18 08/30/90 26.35 08/31/90 26.61 09/01/90 27.08 09/02/90 26.5 09/03/90 25.3 09/04/90 26.45 09/05/90 26.6 09/06/90 27.1 09/07/90 27.85 09/08/90 28.26 09/09/90 27.5 09/10/90 27.08 09/11/90 26.95 09/12/90 27.35 09/13/90 26.95 09/14/90 27.58 09/15/90 28.48 09/16/90 26.53 09/17/90 25.61 09/18/90 24.88 09/19/90 27.25 09/20/90 27.5 09/21/90 28 09/22/90 27.55 09/23/90 27.43 09/24/90 30.13 09/25/90 30.35 09/26/90 32.25 09/27/90 21.48 09/28/90 20.05 09/29/90 21.63 09/30/90 24.91 10/01/90 24.08 10/02/90 25.63 10/03/90 24.15 10/04/90 21.03 10/05/90 21.73 10/06/90 21.08 10/07/90 21.9 10/08/90 21.33 10/09/90 21.23 10/10/90 20.7 10/11/90 21.48 10/12/90 21.33 10/13/90 21.78 10/14/90 22.44 10/15/90 22.78 10/16/90 22.38 10/17/90 22.25 10/18/90 20.73 10/19/90 20.73 10/20/90 20.08 10/21/90 20.18 10/22/90 18.48 10/23/90 17.43 10/24/90 17.43 10/25/90 18.48 10/26/90 19.03 10/27/90 19.28 10/28/90 19.43 10/29/90 20.33 10/30/90 20.5 10/31/90 19.78 11/01/90 19.33 11/02/90 19.34 11/03/90 19 11/04/90 20.06 11/05/90 20.48 11/06/90 20.05 11/07/90 19.88 11/08/90 19.78 11/09/90 20.68 11/10/90 20.4 11/11/90 20.78 11/12/90 19.88 11/13/90 19.47 11/14/90 19.78 11/15/90 19.45 11/16/90 19.63 11/17/90 19.28 11/18/90 19.38 11/19/90 19.48 11/20/90 19.98 11/21/90 20.03 11/22/90 20.28 11/23/90 20.58 11/24/90 21.08 11/25/90 20.98 11/26/90 21.54 11/27/90 21.85 11/28/90 21.6 11/29/90 21.73 11/30/90 21.08 12/01/90 21.16 12/02/90 21.68 12/03/90 21.03 12/04/90 21 12/05/90 20.95 12/06/90 21.28 12/07/90 21.3 12/08/90 20.99 12/09/90 21.28 12/10/90 21.17 12/11/90 21.43 12/12/90 21.73 12/13/90 21.72 12/14/90 21.83 12/15/90 21.92 12/16/90 21.25 12/17/90 20.89 12/18/90 20.73 12/19/90 21.04 12/20/90 20.91 12/21/90 21.19 12/22/90 21.39 12/23/90 20.95 12/24/90 20.85 12/25/90 20.95 12/26/90 21.04 12/27/90 21.34 12/28/90 21.04 12/29/90 21.3 12/30/90 21.16 12/31/90 21.16 01/01/91 20.9 01/02/91 20.45 01/03/91 20.38 01/04/91 20.28 01/05/91 19.84 01/06/91 19.85 01/07/91 20.08 01/08/91 19.71 01/09/91 19.7 01/10/91 19.97 01/11/91 20.11 01/12/91 19.99 01/13/91 20.22 01/14/91 20.1 01/15/91 19.92 01/16/91 20.03 01/17/91 20.12 01/18/91 20.41 01/19/91 20.56 01/20/91 20.78 01/21/91 20.92 01/22/91 20.69 01/23/91 20.69 01/24/91 20.91 01/25/91 21.29 01/26/91 21.35 01/27/91 21.43 01/28/91 21.32 01/29/91 21.74 01/30/91 21.5 01/31/91 21.7 02/01/91 22.2 02/02/91 21.97 02/03/91 22.16 02/04/91 21.74 02/05/91 21.25 02/06/91 21.41 02/07/91 21.11 02/08/91 21.48 02/09/91 21.38 02/10/91 21.55 02/11/91 21.7 02/12/91 21.33 02/13/91 21.35 02/14/91 21.5 02/15/91 21.39 02/16/91 21.38 02/17/91 21.6 02/18/91 21.64 02/19/91 21.71 02/20/91 21.52 02/21/91 21.3 02/22/91 21.39 02/23/91 21.29 02/24/91 22.5 02/25/91 22.3 02/26/91 21.44 02/27/91 21.93 02/28/91 21.78 03/01/91 21.98 03/02/91 21.86 03/03/91 21.77 03/04/91 22.02 03/05/91 22.28 03/06/91 22.28 03/07/91 22.28 03/08/91 21.76 03/09/91 21.75 03/10/91 21.56 03/11/91 21.36 03/12/91 21.44 03/13/91 21.66 03/14/91 21.51 03/15/91 21.71 03/16/91 21.84 03/17/91 21.73 03/18/91 21.87 03/19/91 21.79 03/20/91 22.02 03/21/91 22.2 03/22/91 22.24 03/23/91 22.11 03/24/91 22.23 03/25/91 22.42 03/26/91 22.25 03/27/91 22.1 03/28/91 22.34 03/29/91 22.7 03/30/91 22.64 03/31/91 22.99 04/01/91 23.02 04/02/91 23.18 04/03/91 23.01 04/04/91 23.19 04/05/91 23.48 04/06/91 23.89 04/07/91 23.67 04/08/91 23.96 04/09/91 24.12 04/10/91 24.03 04/11/91 23.47 04/12/91 23.14 04/13/91 23.47 04/14/91 23.18 04/15/91 23.24 04/16/91 23.09 04/17/91 23.11 04/18/91 23.29 04/19/91 23.85 04/20/91 23.82 04/21/91 23.78 04/22/91 23.44 04/23/91 23.29 04/24/91 23 04/25/91 22.66 04/26/91 22.58 04/27/91 22.28 04/28/91 22.55 04/29/91 22.79 04/30/91 22.38 05/01/91 21.88 05/02/91 22.17 05/03/91 21.93 05/04/91 21.85 05/05/91 22.15 05/06/91 21.04 05/07/91 21.38 05/08/91 21.38 05/09/91 21.48 05/10/91 21.1 05/11/91 20.61 05/12/91 20.75 05/13/91 20.42 05/14/91 19.87 05/15/91 19.39 05/16/91 19.24 05/17/91 19.54 05/18/91 19.94 05/19/91 20.09 05/20/91 19.78 05/21/91 19.45 05/22/91 19.39 05/23/91 19.12 05/24/91 18.28 05/25/91 18.58 05/26/91 18.68 05/27/91 18.63 05/28/91 18.82 05/29/91 18.63 05/30/91 19.15 05/31/91 19.43 06/01/91 19.22 06/02/91 19.24 06/03/91 18.72 06/04/91 17.95 06/05/91 17.89 06/06/91 18.26 06/07/91 18.77 06/08/91 18.4 06/09/91 18.83 06/10/91 18.94 06/11/91 19.11 06/12/91 18.92 06/13/91 18.5 06/14/91 18.73 06/15/91 18.38 06/16/91 18.75 06/17/91 19.35 06/18/91 19.09 06/19/91 18.92 06/20/91 18.95 06/21/91 18.93 06/22/91 18.97 06/23/91 19.26 06/24/91 19.5 06/25/91 19.48 06/26/91 19.91 06/27/91 19.69 06/28/91 19.36 06/29/91 19.29 06/30/91 19.7 07/01/91 19.42 07/02/91 19.42 07/03/91 18.14 07/04/91 18.42 07/05/91 18.52 07/06/91 18.6 07/07/91 18.37 07/08/91 18.3 07/09/91 18.44 07/10/91 18.77 07/11/91 18.69 07/12/91 18.36 07/13/91 18.67 07/14/91 18.62 07/15/91 18.58 07/16/91 18.53 07/17/91 18.65 07/18/91 18.62 07/19/91 18.5 07/20/91 18.86 07/21/91 19.16 07/22/91 19.15 07/23/91 19.27 07/24/91 19.05 07/25/91 19.27 07/26/91 18.78 07/27/91 18.91 07/28/91 19.06 07/29/91 19 07/30/91 19.31 07/31/91 19.19 08/01/91 19.25 08/02/91 19.49 08/03/91 19.85 08/04/91 19.79 08/05/91 20.25 08/06/91 20.44 08/07/91 20.29 08/08/91 20.64 08/09/91 20.33 08/10/91 20.45 08/11/91 20.24 08/12/91 19.81 08/13/91 19.93 08/14/91 20.25 08/15/91 20.26 08/16/91 20.17 08/17/91 19.92 08/18/91 19.91 08/19/91 20.05 08/20/91 20.31 08/21/91 20.29 08/22/91 20.77 08/23/91 20.88 08/24/91 20.88 08/25/91 21.13 08/26/91 20.78 08/27/91 20.79 08/28/91 20.73 08/29/91 20.85 08/30/91 21.02 08/31/91 20.98 09/01/91 20.75 09/02/91 20.56 09/03/91 20.7 09/04/91 20.54 09/05/91 20.12 09/06/91 20.2 09/07/91 20.79 09/08/91 20.79 09/09/91 21.8 09/10/91 22 09/11/91 21.97 09/12/91 22.13 09/13/91 22.07 09/14/91 22.2 09/15/91 22.45 09/16/91 22.53 09/17/91 22.65 09/18/91 22.43 09/19/91 22.23 09/20/91 22.49 09/21/91 22.33 09/22/91 22.28 09/23/91 22.38 09/24/91 22.23 09/25/91 22.3 09/26/91 22.23 09/27/91 22.16 09/28/91 22.47 09/29/91 22.74 09/30/91 23.03 10/01/91 22.73 10/02/91 22.42 10/03/91 22.27 10/04/91 21.84 10/05/91 21.9 10/06/91 22.08 10/07/91 22.08 10/08/91 21.87 10/09/91 21.51 10/10/91 21.38 10/11/91 21.38 10/12/91 21.25 10/13/91 21.38 10/14/91 21.42 10/15/91 21.73 10/16/91 21.8 10/17/91 21.56 10/18/91 21.78 10/19/91 21.91 10/20/91 21.99 10/21/91 22.11 10/22/91 21.95 10/23/91 22.09 10/24/91 22.03 10/25/91 21.98 10/26/91 21.82 10/27/91 21.83 10/28/91 21.6 10/29/91 21.23 10/30/91 21.18 10/31/91 21.41 11/01/91 21.27 11/02/91 21.12 11/03/91 21 11/04/91 21.13 11/05/91 21.35 11/06/91 21.31 11/07/91 21.47 11/08/91 21.54 11/09/91 21.33 11/10/91 21.4 11/11/91 21.19 11/12/91 21.85 11/13/91 21.6 11/14/91 21.24 11/15/91 21.14 11/16/91 21.3 11/17/91 21.46 11/18/91 21.72 11/19/91 21.65 11/20/91 21.69 11/21/91 21.77 11/22/91 21.77 11/23/91 21.98 11/24/91 22 11/25/91 21.93 11/26/91 22 11/27/91 22.35 11/28/91 22.13 11/29/91 22.39 11/30/91 22.23 12/01/91 21.96 12/02/91 21.91 12/03/91 21.78 12/04/91 21.78 12/05/91 21.57 12/06/91 21.51 12/07/91 21.78 12/08/91 21.66 12/09/91 21.83 12/10/91 21.83 12/11/91 21.93 12/12/91 21.76 12/13/91 21.85 12/14/91 21.89 12/15/91 21.99 12/16/91 21.99 12/17/91 22.28 12/18/91 22.12 12/19/91 22.16 12/20/91 22.37 12/21/91 22.31 12/22/91 22.18 12/23/91 21.88 12/24/91 21.49 12/25/91 21.22 12/26/91 21.11 12/27/91 21.14 12/28/91 21.03 12/29/91 21.17 12/30/91 20.71 12/31/91 20.68 01/01/92 20.77 01/02/92 20.6 01/03/92 20.33 01/04/92 20.62 01/05/92 20.26 01/06/92 20.63 01/07/92 20.54 01/08/92 20.46 01/09/92 20.19 01/10/92 20.04 01/11/92 20.37 01/12/92 20.32 01/13/92 20.21 01/14/92 20.5 01/15/92 20.37 01/16/92 20.01 01/17/92 20.06 01/18/92 20.29 01/19/92 20.29 01/20/92 20.29 01/21/92 19.91 01/22/92 19.56 01/23/92 19.38 01/24/92 19.08 01/25/92 18.95 01/26/92 19.17 01/27/92 18.69 01/28/92 18.86 01/29/92 19.26 01/30/92 19.09 01/31/92 19.06 02/01/92 18.94 02/02/92 19.42 02/03/92 19.68 02/04/92 19.81 02/05/92 19.92 02/06/92 19.79 02/07/92 19.97 02/08/92 19.97 02/09/92 19.77 02/10/92 19.62 02/11/92 19.63 02/12/92 19.49 02/13/92 19.03 02/14/92 19.13 02/15/92 19.03 02/16/92 18.92 02/17/92 18.9 02/18/92 18.78 02/19/92 18.21 02/20/92 18.51 02/21/92 18.71 02/22/92 18.89 02/23/92 18.94 02/24/92 18.4 02/25/92 18.35 02/26/92 18.71 02/27/92 18.64 02/28/92 19.51 02/29/92 19.67 03/01/92 19.66 03/02/92 20.38 03/03/92 20.27 03/04/92 20.32 03/05/92 20 03/06/92 20.29 03/07/92 20.27 03/08/92 20.07 03/09/92 20.12 03/10/92 20.2 03/11/92 20.29 03/12/92 19.96 03/13/92 19.775 03/14/92 19.59 03/15/92 19.3 03/16/92 19.44 03/17/92 19.69 03/18/92 20.08 03/19/92 20.49 03/20/92 20.28 03/21/92 20.63 03/22/92 20.53 03/23/92 20.62 03/24/92 20.48 03/25/92 20.46 03/26/92 21.05 03/27/92 20.85 03/28/92 20.63 03/29/92 20.71 03/30/92 20.42 03/31/92 20.12 04/01/92 20.38 04/02/92 20.18 04/03/92 20.04 04/04/92 20.14 04/05/92 20.29 04/06/92 20.05 04/07/92 19.52 04/08/92 19.98 04/09/92 19.97 04/10/92 20.12 04/11/92 20.42 04/12/92 20.27 04/13/92 20.27 04/14/92 20.44 04/15/92 20.54 04/16/92 20.67 04/17/92 20.59 04/18/92 20.33 04/19/92 20.35 04/20/92 20.22 04/21/92 20.43 04/22/92 20.28 04/23/92 20.38 04/24/92 20.21 04/25/92 20.09 04/26/92 19.99 04/27/92 20.05 04/28/92 19.99 04/29/92 19.79 04/30/92 19.93 05/01/92 19.83 05/02/92 20.21 05/03/92 20.42 05/04/92 20.63 05/05/92 20.54 05/06/92 20.58 05/07/92 20.4 05/08/92 20.46 05/09/92 20.49 05/10/92 20.43 05/11/92 20.42 05/12/92 20.38 05/13/92 20.19 05/14/92 19.8 05/15/92 19.51 05/16/92 19.51 05/17/92 19.32 05/18/92 19.15 05/19/92 19.56 05/20/92 19.6 05/21/92 19.43 05/22/92 19.75 05/23/92 19.92 05/24/92 20.05 05/25/92 20.04 05/26/92 20.2 05/27/92 20.05 05/28/92 19.77 05/29/92 19.79 05/30/92 19.6 05/31/92 19.65 06/01/92 19.66 06/02/92 19.27 06/03/92 18.99 06/04/92 18.9 06/05/92 18.6 06/06/92 18.87 06/07/92 18.7 06/08/92 18.71 06/09/92 18.63 06/10/92 18.35 06/11/92 18.44 06/12/92 18.36 06/13/92 18.83 06/14/92 18.89 06/15/92 18.99 06/16/92 18.82 06/17/92 18.44 06/18/92 17.93 06/19/92 18.11 06/20/92 18.29 06/21/92 18.06 06/22/92 17.79 06/23/92 17.92 06/24/92 18.12 06/25/92 18.05 06/26/92 17.43 06/27/92 17.73 06/28/92 17.29 06/29/92 17.68 06/30/92 17.2 07/01/92 17.6 07/02/92 17.57 07/03/92 17.67 07/04/92 18.11 07/05/92 18.5 07/06/92 18.25 07/07/92 18.12 07/08/92 17.94 07/09/92 17.9 07/10/92 17.81 07/11/92 17.82 07/12/92 17.54 07/13/92 17.3 07/14/92 17.58 07/15/92 17.58 07/16/92 17.87 07/17/92 18.16 07/18/92 18.14 07/19/92 17.84 07/20/92 17.95 07/21/92 17.68 07/22/92 17.64 07/23/92 18.09 07/24/92 18.42 07/25/92 18.38 07/26/92 18.45 07/27/92 18.4 07/28/92 18.82 07/29/92 18.63 07/30/92 18.24 07/31/92 17.92 08/01/92 17.97 08/02/92 17.72 08/03/92 17.43 08/04/92 17.14 08/05/92 17 08/06/92 16.97 08/07/92 16.74 08/08/92 16.98 08/09/92 16.94 08/10/92 16.85 08/11/92 16.85 08/12/92 17.1 08/13/92 17.68 08/14/92 18.12 08/15/92 17.53 08/16/92 17.52 08/17/92 17.52 08/18/92 17.52 08/19/92 18.07 08/20/92 18.73 08/21/92 18.72 08/22/92 18.63 08/23/92 18.4 08/24/92 18.43 08/25/92 18.43 08/26/92 18.49 08/27/92 18.53 08/28/92 18.76 08/29/92 18.7 08/30/92 18.65 08/31/92 18.5 09/01/92 18.24 09/02/92 18.13 09/03/92 18.04 09/04/92 18.25 09/05/92 18.28 09/06/92 17.92 09/07/92 17.36 09/08/92 17.55 09/09/92 17.66 09/10/92 17.3 09/11/92 16.97 09/12/92 17.5 09/13/92 17.03 09/14/92 17.47 09/15/92 17.38 09/16/92 17.09 09/17/92 16.69 09/18/92 16.71 09/19/92 16.54 09/20/92 16.91 09/21/92 16.72 09/22/92 16.78 09/23/92 16.69 09/24/92 17.08 09/25/92 16.67 09/26/92 16.55 09/27/92 16.67 09/28/92 16.39 09/29/92 15.73 09/30/92 15.63 10/01/92 15.53 10/02/92 15.3 10/03/92 15.36 10/04/92 15.45 10/05/92 14.93 10/06/92 15.03 10/07/92 14.57 10/08/92 14.53 10/09/92 14.61 10/10/92 14.65 10/11/92 15.04 10/12/92 14.5 10/13/92 14.47 10/14/92 14.39 10/15/92 14.21 10/16/92 13.98 10/17/92 14.2 10/18/92 14.32 10/19/92 14.61 10/20/92 14.48 10/21/92 14.285 10/22/92 14.09 10/23/92 14.11 10/24/92 14.45 10/25/92 14.19 10/26/92 14.355 10/27/92 14.52 10/28/92 14.66 10/29/92 15.3 10/30/92 15.36 10/31/92 15.33 11/01/92 14.65 11/02/92 14.95 11/03/92 14.36 11/04/92 14.56 11/05/92 14.81 11/06/92 15.15 11/07/92 14.92 11/08/92 15.25 11/09/92 14.95 11/10/92 14.85 11/11/92 15.09 11/12/92 15.26 11/13/92 15.5 11/14/92 15.48 11/15/92 15.37 11/16/92 15.24 11/17/92 15.91 11/18/92 16.06 11/19/92 15.97 11/20/92 15.63 11/21/92 15.31 11/22/92 15.12 11/23/92 14.64 11/24/92 14.59 11/25/92 14.71 11/26/92 14.15 11/27/92 14.13 11/28/92 13.89 11/29/92 14.26 11/30/92 14.21 12/01/92 14.245 12/02/92 14.28 12/03/92 14.18 12/04/92 14.82 12/05/92 14.48 12/06/92 14.5 12/07/92 14.78 12/08/92 14.8 12/09/92 14.74 12/10/92 14.57 12/11/92 14.14 12/12/92 14.17 12/13/92 14.23 12/14/92 14.19 12/15/92 14.47 12/16/92 14.52 12/17/92 14.82 12/18/92 15.03 12/19/92 14.83 12/20/92 14.88 12/21/92 15.37 12/22/92 15.04 12/23/92 14.94 12/24/92 15.21 12/25/92 15.19 12/26/92 14.15 12/27/92 14.41 12/28/92 14.4 12/29/92 14.78 12/30/92 15.67 12/31/92 15.67 01/01/93 15.77 01/02/93 15.59 01/03/93 15.57 01/04/93 15.86 01/05/93 15.74 01/06/93 15.96 01/07/93 16.2 01/08/93 16.58 01/09/93 16.64 01/10/93 16.43 01/11/93 16.65 01/12/93 17.56 01/13/93 17.84 01/14/93 17.66 01/15/93 16.82 01/16/93 16.7 01/17/93 16.57 01/18/93 16.92 01/19/93 17.18 01/20/93 16.93 01/21/93 16.85 01/22/93 17.28 01/23/93 17.74 01/24/93 17.72 01/25/93 17.62 01/26/93 17.84 01/27/93 18.27 01/28/93 18.2 01/29/93 17.99 01/30/93 17.61 01/31/93 18.02 02/01/93 18.49 02/02/93 18.93 02/03/93 18.69 02/04/93 18.4 02/05/93 17.83 02/06/93 17.76 02/07/93 18.02 02/08/93 18.3 02/09/93 18.29 02/10/93 18.25 02/11/93 18.11 02/12/93 18.1 02/13/93 17.78 02/14/93 18.28 02/15/93 18.67 02/16/93 18.48 02/17/93 18.82 02/18/93 18.94 02/19/93 19.75 02/20/93 19.83 02/21/93 20.72 02/22/93 20.68 02/23/93 20.08 02/24/93 19.59 02/25/93 19.38 02/26/93 19.28 02/27/93 18.96 02/28/93 19.14 03/01/93 18.82 03/02/93 19.37 03/03/93 19.52 03/04/93 19.57 03/05/93 19.62 03/06/93 19.3 03/07/93 19.15 03/08/93 19.48 03/09/93 20.17 03/10/93 20.4 03/11/93 20.14 03/12/93 20.18 03/13/93 19.89 03/14/93 19.38 03/15/93 19.49 03/16/93 19.15 03/17/93 19.32 03/18/93 19.59 03/19/93 19.42 03/20/93 19.26 03/21/93 19.46 03/22/93 19.87 03/23/93 20.3 03/24/93 20.65 03/25/93 20.22 03/26/93 20.06 03/27/93 20.14 03/28/93 19.37 03/29/93 19.41 03/30/93 19.29 03/31/93 18.96 04/01/93 18.67 04/02/93 18.05 04/03/93 18.24 04/04/93 17.64 04/05/93 18.08 04/06/93 17.73 04/07/93 17.56 04/08/93 16.87 04/09/93 17.09 04/10/93 17.54 04/11/93 17.49 04/12/93 17.14 04/13/93 17.62 04/14/93 17.4 04/15/93 17.6 04/16/93 17.47 04/17/93 17.52 04/18/93 17.57 04/19/93 17.62 04/20/93 17.84 04/21/93 17.62 04/22/93 17.53 04/23/93 17.39 04/24/93 17 04/25/93 16.72 04/26/93 16.72 04/27/93 16.84 04/28/93 17.21 04/29/93 17.24 04/30/93 17.06 05/01/93 17.65 05/02/93 17.76 05/03/93 17.68 05/04/93 17.48 05/05/93 17.69 05/06/93 17.96 05/07/93 18.36 05/08/93 18.16 05/09/93 17.97 05/10/93 18.01 05/11/93 18.24 05/12/93 18.27 05/13/93 17.95 05/14/93 17.74 05/15/93 17.13 05/16/93 17.03 05/17/93 16.98 05/18/93 17.11 05/19/93 17.34 05/20/93 17.43 05/21/93 17.57 05/22/93 17.31 05/23/93 17.5 05/24/93 17.71 05/25/93 18.01 05/26/93 18.17 05/27/93 18.25 05/28/93 18.16 05/29/93 18.66 05/30/93 18.9 05/31/93 18.97 06/01/93 18.76 06/02/93 18.38 06/03/93 18.46 06/04/93 18.16 06/05/93 18.18 06/06/93 18.07 06/07/93 17.48 06/08/93 17.58 06/09/93 17.38 06/10/93 17.63 06/11/93 17.47 06/12/93 17.43 06/13/93 17.7 06/14/93 18.05 06/15/93 18.06666667 06/16/93 18.08333333 06/17/93 18.1 06/18/93 17.97 06/19/93 18.06 06/20/93 17.77 06/21/93 17 06/22/93 16.88 06/23/93 16.93 06/24/93 16.86 06/25/93 17.14 06/26/93 17.12 06/27/93 16.92 06/28/93 16.98 06/29/93 16.96 06/30/93 16.6 07/01/93 16.84 07/02/93 16.91 07/03/93 16.98 07/04/93 17.07 07/05/93 17.15 07/06/93 17.41 07/07/93 17.63 07/08/93 17.74 07/09/93 17.69 07/10/93 17.77 07/11/93 17.45 07/12/93 17.56 07/13/93 17.76 07/14/93 17.69 07/15/93 17.4 07/16/93 17.42 07/17/93 17.7 07/18/93 17.72 07/19/93 17.52 07/20/93 17.89 07/21/93 18.47 07/22/93 18.72 07/23/93 18.7 07/24/93 18.46 07/25/93 18.16 07/26/93 18.53 07/27/93 18.82 07/28/93 18.23 07/29/93 17.95 07/30/93 18.2 07/31/93 18.48 08/01/93 18.48 08/02/93 18.54 08/03/93 18.78 08/04/93 18.58 08/05/93 18.43 08/06/93 18.36 08/07/93 18.28 08/08/93 18.47 08/09/93 18.29 08/10/93 18.44 08/11/93 18.46 08/12/93 18.63 08/13/93 18.94 08/14/93 18.9 08/15/93 18.86 08/16/93 18.84 08/17/93 18.59 08/18/93 18.7 08/19/93 18.64 08/20/93 18.52 08/21/93 18.31 08/22/93 18.4 08/23/93 18.63 08/24/93 18.56 08/25/93 18.59 08/26/93 18.3 08/27/93 17.98 08/28/93 17.92 08/29/93 18.19 08/30/93 17.9 08/31/93 18.12 09/01/93 18.18 09/02/93 18.27 09/03/93 18.58 09/04/93 18.44 09/05/93 18.91 09/06/93 18.85 09/07/93 18.68 09/08/93 19.08 09/09/93 18.95 09/10/93 19.21 09/11/93 19.17 09/12/93 19.18 09/13/93 19.05 09/14/93 19.11 09/15/93 19.57 09/16/93 19.74 09/17/93 19.67 09/18/93 19.61 09/19/93 19.84 09/20/93 19.5 09/21/93 19.16 09/22/93 19.8 09/23/93 20.14 09/24/93 20.4 09/25/93 20.52 09/26/93 20.46 09/27/93 20.13 09/28/93 20.31 09/29/93 20.18 09/30/93 20.48 10/01/93 20.36 10/02/93 20.53 10/03/93 20.18 10/04/93 19.88 10/05/93 20.3 10/06/93 20.33 10/07/93 20.32 10/08/93 19.67 10/09/93 19.76 10/10/93 19.4 10/11/93 19.55 10/12/93 19.91 10/13/93 20.01 10/14/93 19.94 10/15/93 19.99 10/16/93 20.06 10/17/93 19.86 10/18/93 19.81 10/19/93 19.34 10/20/93 19.12 10/21/93 18.7 10/22/93 18.78 10/23/93 18.88 10/24/93 18.89 10/25/93 19.14 10/26/93 19.25 10/27/93 19.16 10/28/93 19.08 10/29/93 18.94 10/30/93 18.83 10/31/93 18.87 11/01/93 18.93 11/02/93 19.05 11/03/93 18.9 11/04/93 18.8 11/05/93 18.23 11/06/93 18.01 11/07/93 17.59 11/08/93 17.76 11/09/93 17.81 11/10/93 17.67 11/11/93 17.95 11/12/93 17.98 11/13/93 17.59 11/14/93 17.38 11/15/93 17.33 11/16/93 17.27 11/17/93 17.21 11/18/93 17.42 11/19/93 17.14 11/20/93 17.35 11/21/93 17.31 11/22/93 17.49 11/23/93 17.25 11/24/93 17.32 11/25/93 17.28 11/26/93 17.33 11/27/93 17.33 11/28/93 17.03 11/29/93 17.07 11/30/93 17.17 12/01/93 17.45 12/02/93 17.47 12/03/93 17.51 12/04/93 17.43 12/05/93 17.62 12/06/93 17.59 12/07/93 17.95 12/08/93 17.72 12/09/93 17.74 12/10/93 17.65 12/11/93 17.86 12/12/93 17.77 12/13/93 17.91 12/14/93 17.86 12/15/93 17.48 12/16/93 17.4 12/17/93 17.59 12/18/93 17.65 12/19/93 17.87 12/20/93 18.26 12/21/93 18.54 12/22/93 18.79 12/23/93 19.6 12/24/93 19.91 12/25/93 17.84 12/26/93 17.87 12/27/93 17.74 12/28/93 17.89 12/29/93 18.08 12/30/93 18.285 12/31/93 18.49 01/01/94 18.27 01/02/94 18.27 01/03/94 18.44 01/04/94 18.49 01/05/94 18.76 01/06/94 18.53 01/07/94 18.87 01/08/94 18.94 01/09/94 18.92 01/10/94 19.01 01/11/94 18.53 01/12/94 17.89 01/13/94 17.27 01/14/94 17.38 01/15/94 17.47 01/16/94 17.64 01/17/94 17.72 01/18/94 17.54 01/19/94 17.67 01/20/94 17.56 01/21/94 17.32 01/22/94 16.86 01/23/94 17.03 01/24/94 17.36 01/25/94 17.29 01/26/94 17.28 01/27/94 17.08 01/28/94 17.38 01/29/94 17.6 01/30/94 17.59 01/31/94 17.57 02/01/94 17.34 02/02/94 17.44 02/03/94 17.48 02/04/94 17.61 02/05/94 17.58 02/06/94 17.61 02/07/94 17.54 02/08/94 17.67 02/09/94 17.67 02/10/94 17.74 02/11/94 17.94 02/12/94 17.93 02/13/94 17.68 02/14/94 17.62 02/15/94 17.82 02/16/94 17.83 02/17/94 17.83 02/18/94 17.78 02/19/94 17.89 02/20/94 17.92 02/21/94 18.16 02/22/94 18.56 02/23/94 18.14 02/24/94 17.89 02/25/94 17.93 02/26/94 18.07666667 02/27/94 18.22333333 02/28/94 18.37 03/01/94 18.28 03/02/94 18.27 03/03/94 18.27 03/04/94 18.43 03/05/94 18.61 03/06/94 18.66 03/07/94 18.76 03/08/94 18.69 03/09/94 18.97 03/10/94 18.62 03/11/94 18.8 03/12/94 19.01 03/13/94 19.14 03/14/94 19.51 03/15/94 19.71 03/16/94 19.05 03/17/94 18.87 03/18/94 18.83 03/19/94 19.12 03/20/94 19.25 03/21/94 19.49 03/22/94 19.47 03/23/94 19.54 03/24/94 19.83 03/25/94 19.9 03/26/94 19.96 03/27/94 20.26 03/28/94 20.5 03/29/94 19.86 03/30/94 19.66 03/31/94 18.87 04/01/94 18.28 04/02/94 18.42 04/03/94 18.12 04/04/94 18.58 04/05/94 19.12 04/06/94 18.94 04/07/94 18.49 04/08/94 18.58 04/09/94 18.95 04/10/94 18.06 04/11/94 17.68 04/12/94 17.33 04/13/94 17.65 04/14/94 17.76 04/15/94 17.63 04/16/94 17.83 04/17/94 17.53 04/18/94 17.74 04/19/94 17.71 04/20/94 17.79 04/21/94 17.83 04/22/94 18.01 04/23/94 18.96 04/24/94 18.86 04/25/94 19.02 04/26/94 19.16 04/27/94 20.115 04/28/94 21.07 04/29/94 21.63 04/30/94 22.14 05/01/94 20.97 05/02/94 19.45 05/03/94 19.65 05/04/94 19.3 05/05/94 19.59 05/06/94 19.45 05/07/94 19.24 05/08/94 19.65 05/09/94 20.16 05/10/94 19.87 05/11/94 19.66 05/12/94 19.92 05/13/94 20.42 05/14/94 20.49 05/15/94 21.18 05/16/94 21.99 05/17/94 23.23 05/18/94 24.56 05/19/94 22.74 05/20/94 22.44 05/21/94 22.85 05/22/94 23.23 05/23/94 22.38 05/24/94 21.64 05/25/94 21.45 05/26/94 21.43 05/27/94 22.29 05/28/94 22.68 05/29/94 22.22 05/30/94 22.75 05/31/94 23.01 06/01/94 23.23 06/02/94 24.08 06/03/94 25.15 06/04/94 24.29 06/05/94 25.13 06/06/94 24.48 06/07/94 24.67 06/08/94 23.47 06/09/94 23.96 06/10/94 23.94 06/11/94 24.39 06/12/94 24 06/13/94 24.35 06/14/94 22.33 06/15/94 22.07 06/16/94 20.95 06/17/94 20.81 06/18/94 20.78 06/19/94 21.19 06/20/94 21.06 06/21/94 21.07 06/22/94 21.13 06/23/94 20.65 06/24/94 21.01 06/25/94 21.23 06/26/94 21.35 06/27/94 21.28 06/28/94 20.79 06/29/94 20.64 06/30/94 22.28 07/01/94 21.95 07/02/94 23.02 07/03/94 22.35 07/04/94 21.58 07/05/94 21.1 07/06/94 20.65 07/07/94 19.95 07/08/94 19.77 07/09/94 19.86 07/10/94 20.28 07/11/94 19.73 07/12/94 20.06 07/13/94 20.28 07/14/94 20.18 07/15/94 20.13 07/16/94 20.13 07/17/94 20.03 07/18/94 20.28 07/19/94 21.43 07/20/94 21.53 07/21/94 20.73 07/22/94 20.68 07/23/94 20.38 07/24/94 20.1 07/25/94 20.13 07/26/94 20.63 07/27/94 20.98 07/28/94 20.92 07/29/94 21.48 07/30/94 21.08 07/31/94 21.38 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25.25 10/08/94 25.45 10/09/94 25 10/10/94 24.3 10/11/94 24.65 10/12/94 25.5 10/13/94 25.45 10/14/94 25.1 10/15/94 25.4 10/16/94 25.8 10/17/94 25.85 10/18/94 25.79 10/19/94 24.78 10/20/94 24.55 10/21/94 24.8 10/22/94 24.75 10/23/94 24.15 10/24/94 24.4 10/25/94 23.25 10/26/94 23 10/27/94 22.8 10/28/94 22.65 10/29/94 22.75 10/30/94 22.8 10/31/94 23.6 11/01/94 23.35 11/02/94 23.4 11/03/94 24.25 11/04/94 24.35 11/05/94 24.15 11/06/94 23.85 11/07/94 24.5 11/08/94 23.75 11/09/94 23.9 11/10/94 24.15 11/11/94 25.75 11/12/94 23.7 11/13/94 23.7 11/14/94 23.7 11/15/94 23.7 11/16/94 24.7 11/17/94 24.8 11/18/94 25 11/19/94 25.6 11/20/94 25.6 11/21/94 25.15 11/22/94 24.25 11/23/94 23.4 11/24/94 23.75 11/25/94 24.45 11/26/94 25.7 11/27/94 25.7 11/28/94 26.05 11/29/94 26.55 11/30/94 26.1 12/01/94 26.4 12/02/94 25.05 12/03/94 25.1 12/04/94 25.2 12/05/94 25.35 12/06/94 25.9 12/07/94 25.55 12/08/94 25.55 12/09/94 26.25 12/10/94 26.25 12/11/94 26.55 12/12/94 26.3 12/13/94 26.15 12/14/94 25.2 12/15/94 25.1 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21.79 10/19/96 21.54 10/20/96 22 10/21/96 22.29 10/22/96 22.58 10/23/96 22.64 10/24/96 23.24 10/25/96 23.55 10/26/96 24.18 10/27/96 23.86 10/28/96 24.1 10/29/96 24.52 10/30/96 24.72 10/31/96 24.32 11/01/96 24.48 11/02/96 24.26 11/03/96 24.76 11/04/96 24.81 11/05/96 24.63 11/06/96 24.52 11/07/96 24.69 11/08/96 24.54 11/09/96 24.51 11/10/96 23.71 11/11/96 23.37 11/12/96 23.24 11/13/96 22.46 11/14/96 20.81 11/15/96 21.58 11/16/96 22.93 11/17/96 22.93 11/18/96 22.46 11/19/96 22.81 11/20/96 22.44 11/21/96 22.36 11/22/96 22.21 11/23/96 22.74 11/24/96 23.48 11/25/96 23.22 11/26/96 23.17 11/27/96 22.71 11/28/96 21.59 11/29/96 21.79 11/30/96 22.44 12/01/96 22.49 12/02/96 22.59 12/03/96 23.17 12/04/96 22.93 12/05/96 23.28 12/06/96 24.21 12/07/96 24.37 12/08/96 24.33 12/09/96 24.91 12/10/96 25.31 12/11/96 26.04 12/12/96 26.57 12/13/96 25.71 12/14/96 26.61 12/15/96 28.03 12/16/96 26.91 12/17/96 27.22 12/18/96 27.22 12/19/96 27.22 12/20/96 25.84 12/21/96 24.87 12/22/96 25.01 12/23/96 25.88 12/24/96 25.71 12/25/96 26.67 12/26/96 26.36 12/27/96 26.69 12/28/96 26 12/29/96 25.21 12/30/96 25.37 12/31/96 25.87 01/01/97 26.28 01/02/97 26.74 01/03/97 26.76 01/04/97 26.55 01/05/97 26.34 01/06/97 25.51 01/07/97 25.86 01/08/97 26.36 01/09/97 26.81 01/10/97 26.41 01/11/97 25.76 01/12/97 25.56 01/13/97 24.65 01/14/97 24.79 01/15/97 24.79 01/16/97 24.71 01/17/97 25.69 01/18/97 26.3 01/19/97 26.63 01/20/97 28.01 01/21/97 28.495 01/22/97 28.98 01/23/97 29.11 01/24/97 29.67 01/25/97 29.71 01/26/97 29.25 01/27/97 30.28 01/28/97 27.66 01/29/97 27.22 01/30/97 27.27 01/31/97 27.65 02/01/97 28.28 02/02/97 27.52 02/03/97 28.26 02/04/97 28.67 02/05/97 28.4 02/06/97 28.05 02/07/97 28.71 02/08/97 29.49 02/09/97 29.51 02/10/97 30.3 02/11/97 30.17 02/12/97 30.01 02/13/97 29.37 02/14/97 29.51 02/15/97 29.57 02/16/97 29.63 02/17/97 30.19 02/18/97 30.23 02/19/97 30.34 02/20/97 30.11 02/21/97 30.57 02/22/97 31.71 02/23/97 31.51 02/24/97 31.46 02/25/97 32.19 02/26/97 33.9 02/27/97 31.22 02/28/97 31.61 03/01/97 31.76 03/02/97 32.11 03/03/97 31.93 03/04/97 30.47 03/05/97 31.1 03/06/97 30.86 03/07/97 29.33 03/08/97 28.01 03/09/97 27.28 03/10/97 27.47 03/11/97 27.86 03/12/97 27.59 03/13/97 27.1 03/14/97 26.36 03/15/97 26.67 03/16/97 26.86 03/17/97 26.28 03/18/97 25.46 03/19/97 25.76 03/20/97 25.51 03/21/97 24.97 03/22/97 23.91 03/23/97 24.17 03/24/97 25.49 03/25/97 25.29 03/26/97 25.48 03/27/97 26.06 03/28/97 25.92 03/29/97 27.38 03/30/97 27.29 03/31/97 27.41 04/01/97 26.41 04/02/97 24.69 04/03/97 25.53 04/04/97 25.71 04/05/97 25.84 04/06/97 26.86 04/07/97 26.6 04/08/97 27.08 04/09/97 27.37 04/10/97 28.05 04/11/97 28.46 04/12/97 28.1 04/13/97 29.25 04/14/97 29.64 04/15/97 29.95 04/16/97 29.76 04/17/97 29.38 04/18/97 30.28 04/19/97 30.02 04/20/97 28.62 04/21/97 28.61 04/22/97 29.89 04/23/97 30.43 04/24/97 29.76 04/25/97 30.36 04/26/97 29.03 04/27/97 30.19 04/28/97 30.34 04/29/97 29.87 04/30/97 29.78 05/01/97 29.29 05/02/97 29.78 05/03/97 30.22 05/04/97 31.76 05/05/97 32.73 05/06/97 32.72 05/07/97 32.7 05/08/97 32.35 05/09/97 31.57 05/10/97 33.07 05/11/97 33.64 05/12/97 34.72 05/13/97 34.76 05/14/97 31.56 05/15/97 32.01 05/16/97 31.86 05/17/97 32.73 05/18/97 32.44 05/19/97 31.88 05/20/97 31.32 05/21/97 30.76 05/22/97 30.19 05/23/97 30.26 05/24/97 29.51 05/25/97 29.61 05/26/97 30.34 05/27/97 31.41 05/28/97 31.31 05/29/97 30.71 05/30/97 31.94 05/31/97 31.1 06/01/97 30.94 06/02/97 28.56 06/03/97 27.97 06/04/97 27.89 06/05/97 27.81 06/06/97 28.21 06/07/97 28.22 06/08/97 27.5 06/09/97 27.85 06/10/97 28.27 06/11/97 28.92 06/12/97 29.94 06/13/97 28.93 06/14/97 29.26 06/15/97 30.38 06/16/97 31.09 06/17/97 31.02 06/18/97 31.92 06/19/97 31.43 06/20/97 31.91 06/21/97 31.88 06/22/97 31.97 06/23/97 32.42 06/24/97 31.24 06/25/97 31.23 06/26/97 33.41 06/27/97 34.01 06/28/97 32.92 06/29/97 32.73 06/30/97 33.25 07/01/97 33.09 07/02/97 33.42 07/03/97 33.67 07/04/97 33.92 07/05/97 34.97 07/06/97 35.18 07/07/97 33.62 07/08/97 35.14 07/09/97 34.25 07/10/97 33.87 07/11/97 34.37 07/12/97 35.87 07/13/97 36.75 07/14/97 36.96 07/15/97 37.22 07/16/97 33.84 07/17/97 32.66 07/18/97 31.5 07/19/97 31.78 07/20/97 31.23 07/21/97 30.26 07/22/97 30.87 07/23/97 32.05 07/24/97 31.86 07/25/97 30.91 07/26/97 30.66 07/27/97 30.86 07/28/97 31.98 07/29/97 33.29 07/30/97 33.2 07/31/97 36.06 08/01/97 34.96 08/02/97 33.18 08/03/97 33.36 08/04/97 33.51 08/05/97 33.06 08/06/97 34.31 08/07/97 34.9 08/08/97 34.53 08/09/97 33.62 08/10/97 33.75 08/11/97 32.78 08/12/97 32.86 08/13/97 32.7 08/14/97 33.14 08/15/97 32.59 08/16/97 32.62 08/17/97 33.02 08/18/97 33.44 08/19/97 32.92 08/20/97 33.87 08/21/97 34.05 08/22/97 34.3 08/23/97 34.72 08/24/97 35.54 08/25/97 34.84 08/26/97 35.62 08/27/97 35.98 08/28/97 35.54 08/29/97 36.06 08/30/97 36.06 08/31/97 36.06 09/01/97 36.24 09/02/97 34.02 09/03/97 34.58 09/04/97 33.61 09/05/97 32.06 09/06/97 31.28 09/07/97 29.25 09/08/97 30.24 09/09/97 29.36 09/10/97 28.31 09/11/97 29.75 09/12/97 29.81 09/13/97 28.75 09/14/97 28.06 09/15/97 28.86 09/16/97 29.52 09/17/97 29.34 09/18/97 25.83 09/19/97 26.06 09/20/97 26.16 09/21/97 27 09/22/97 26.55 09/23/97 25.82 09/24/97 26.72

Answer 1

[Eric Truslow]

If you have Excel, you should be able to import the spreadsheet with:

[num,txt,raw] = xlsread('CrudeOil.xls');

Then you should be able to access the columns of the spreadsheet through num, txt or raw.

[Pallav Mishra]

I have tried this already..used [oilprice,oildate] = xlsread('c:\CrudeOil.xls'); [oildate] = oildate(:,1);[oildatenum] = datenum(oildate,'mm/dd/yyyy'); (this last command gave me the Datenum failed error)

[Eric Truslow]

Assuming you iterate over each element, try this:

   oildatenum = [];
   y = []; m = []; d = [];
   [num,txt,raw] = xlsread('CrudeOil.xls');

   % Loop over each element
   for k = 1:length(txt)
     oildate_k = oildate{k};
     [y(k),m(k),d(k)] = datevec(oildate_k); % Gives you the year, month, and day as vectors or
     [oildatenum(k)] = datenum(oildate_k); % Gives you a serial date num.
   end

Anyway for calculating the returns you should be able to do something like

   stock_return = log( diff(num) ); % Uses base e. Use log10() for base 10

Then, to plot say

   figure;  plot(oildatenum(2:end),stock_return);

or by day

   figure; plot(d(2:end),stock_return);

We have to be careful about indexes because diff results in a vector 1 element shorter than the input.

[Pallav Mishra]

Hi Eric, I still am facing issues with Datenum. This time, it failed to lookup month of the year (I got the error after the loop code):

Error using datevec (line 214) Failed to lookup month of year.