1984 08 99.99  10.04 -99.99 
2000 03  7.04  -2.15   2.44 
2000 04 18.45   3.76  11.11 
2000 05 22.92   7.10  15.01 
2000 06 24.64  10.18  17.41 
2000 07 22.97  12.29  17.62 
2000 08 26.98  11.75  19.36 
2000 09 19.58   7.53  13.55 
2000 10 19.53   3.12  11.32 
2000 11 12.51   1.51   7.01 
2001 01  2.80  -5.28  -1.24 
2001 02  4.17  -4.03    . 6 
2001 03 10.29 -99.99 -99.99 
2001 04 16.49   3.59  10.04 
2001 05 20.60   7.58  14.09 
2001 06 21.03  10.58  15.80 
2001 07 26.36  14.68  20.52 
2001 08 26.37  13.58  19.97 
2001 09 17.54   9.47  13.51 
2001 10 99.99   6.57 -99.99 
2001 11  4.59  -2.11   1.23 
2001 12 -2.30  -9.72  -6.01 
2002 04 99.99   2.54 -99.99 
2002 09 99.99   8.42 -99.99 
2002 11 99.99   1.36 -99.99 
2003 01   .74  -5.89  -2.57 
2003 02  2.38  -9.45  -3.53 
2003 03  8.09  -2.32   2.88 
2003 04 13.51   1.01   7.26 
2003 05 25.97   9.83  17.90 
2003 06 24.97  11.41  18.18 
2003 07 24.95  13.93  19.44 
2003 08 26.13  11.59  18.86 
2003 09 20.37   6.81  13.59 
2003 10 10.96   3.68   7.32 
2003 11  9.30   1.20   5.25 
2003 12  1.55  -4.98  -1.71 
2004 01 -1.04  -6.34  -3.69 
2004 02  1.67  -6.36  -2.34 
2004 03  8.37  -1.87   3.25 
2004 04 15.50   3.02   9.26 
2004 11 99.99   2.38 -99.99 
2005 02 99.99  -8.08 -99.99 
2005 03 99.99  -6.62 -99.99 
2005 12 99.99  -3.80 -99.99 
2006 02 99.99  -5.95 -99.99 
2006 06 99.99  10.94 -99.99 
2007 02 99.99  -1.13 -99.99 
2008 07 23.32  12.74  18.02 
