1981 07 24.92 -99.99 -99.99 
2000 03  7.37   -.64   3.36 
2000 04 20.18   7.13  13.65 
2000 05 25.13   9.72  17.43 
2000 06 27.16  12.46  19.81 
2000 07 24.52  14.12  19.32 
2000 08 28.68  14.36  21.52 
2000 09 21.10   8.78  14.94 
2000 10 18.89   5.11  12.00 
2000 11 12.21   2.95   7.58 
2001 01  2.68  -3.40   -.36 
2001 02  4.41  -2.39   1.00 
2001 03 11.00   3.83   7.41 
2001 04 16.54   5.67  11.11 
2001 05 23.71   9.70  16.70 
2001 06 23.63  12.22  17.92 
2001 07 27.19  16.54  21.86 
2001 08 27.74  15.51  21.62 
2001 09 18.40  10.73  14.56 
2001 10 16.44   8.10  12.27 
2001 11  5.75    .73   3.24 
2001 12 -2.97  -8.59  -5.78 
2002 04 99.99   5.34 -99.99 
2002 11 99.99   2.39 -99.99 
2003 01   .32 -99.99 -99.99 
2003 02  1.50  -9.87  -4.18 
2003 03  8.80  -1.46   3.67 
2003 04 15.75   3.79   9.77 
2003 05 27.01  12.36  19.68 
2003 06 27.73  14.02  20.87 
2003 07 27.65  16.04  21.84 
2003 08 29.60  14.55  22.07 
2003 09 22.73   8.82  15.77 
2003 10 11.57   4.60   8.08 
2003 11 10.44   2.84   6.64 
2003 12  1.51  -3.65  -1.07 
2004 01 -1.35  -6.28  -3.81 
2004 02  1.70  -4.54  -1.42 
2004 03  9.26   -.31   4.47 
2004 04 17.70   6.20  11.95 
2004 12 99.99  -1.36 -99.99 
2005 02 99.99  -8.70 -99.99 
2005 03 99.99  -4.44 -99.99 
2005 12 99.99  -2.68 -99.99 
2006 02 99.99  -4.82 -99.99 
2006 06 99.99  13.18 -99.99 
2007 02 99.99    .74 -99.99 
2008 07 24.41 -99.99 -99.99 
