1973 05 21.88 -99.99 -99.99 
1976 09 18.64 -99.99 -99.99 
1978 04 14.19 -99.99 -99.99 
1979 04 12.04 -99.99 -99.99 
1985 04 99.99   2.23 -99.99 
1987 10 10.66   -.30   5.18 
1989 07 99.99  15.12 -99.99 
1991 02 -3.07 -99.99 -99.99 
1991 03  1.51 -99.99 -99.99 
1991 05 22.56 -99.99 -99.99 
1991 07 31.01 -99.99 -99.99 
1991 08 27.20 -99.99 -99.99 
1991 09 21.37 -99.99 -99.99 
1992 06 27.20 -99.99 -99.99 
1992 07 26.16 -99.99 -99.99 
1993 03  2.77 -99.99 -99.99 
1993 08 26.33 -99.99 -99.99 
1993 10 13.13 -99.99 -99.99 
1993 11 -3.25 -99.99 -99.99 
1994 09 99.99   9.32 -99.99 
1995 06 27.99  14.97  21.48 
1995 07 26.17  14.77  20.47 
1995 08 25.59  12.89  19.24 
1995 09 20.94   8.99  14.96 
1995 10 11.56   2.75   7.15 
1995 11  3.34   -.17   1.58 
1995 12 -3.69  -9.14  -6.42 
1996 01 -7.07 -14.43 -10.75 
1996 02 -4.17  -9.68  -6.93 
1996 04 12.69   3.87   8.28 
1996 05 24.95  12.32  18.63 
1996 06 24.79  13.54  19.16 
1996 07 29.51  14.51  22.01 
1996 08 26.30  12.83  19.56 
1996 09 17.01   7.87  12.44 
1996 10 11.86   2.66   7.26 
1996 11  8.68   2.36   5.52 
1996 12 -1.29  -6.00  -3.64 
1997 01 -5.02 -10.87  -7.94 
1997 02  -.83  -7.48  -4.15 
1997 03  4.51  -2.89    .81 
1997 04 10.56   2.08   6.32 
1997 05 22.37   9.84  16.10 
1997 06 24.79  14.40  19.59 
1997 07 24.61  15.80  20.20 
1997 08 24.54  13.25  18.89 
1997 09 16.34   5.19  10.76 
1997 10 10.80   3.69   7.24 
1997 11  5.25   -.46   2.39 
1998 02   .33  -7.88  -3.77 
1998 03  4.09  -1.52   1.28 
1998 04 16.09   5.85  10.97 
1998 05 21.25   9.64  15.45 
1998 06 27.93  15.86  21.89 
1998 07 29.05  16.12  22.59 
1998 08 26.63  13.41  20.02 
1998 09 22.07   7.39  14.73 
1998 10 13.63   3.90   8.76 
1998 11   .61  -4.56  -1.97 
1998 12 -1.48  -6.96  -4.22 
1999 02  1.81  -2.90   -.54 
1999 04 16.37   5.76  11.06 
1999 06 28.21  15.26  21.73 
1999 08 26.02  14.10  20.06 
1999 09 21.99   7.40  14.69 
1999 10 12.26   3.39   7.82 
1999 11  1.21  -5.14  -1.96 
1999 12  3.15   -.86   1.14 
2000 01 -3.13 -10.00  -6.56 
2000 02  1.30  -4.81  -1.75 
2000 03  4.29  -1.46   1.41 
2000 05 19.68   6.96  13.32 
2000 06 24.39  13.15  18.77 
2000 07 26.72  16.01  21.36 
2000 08 27.20  14.02  20.61 
2000 09 18.67   8.03  13.35 
2000 11  4.29  -2.24   1.02 
2000 12  4.23   -.12   2.06 
2001 01  2.00  -2.38   -.19 
2001 02   . 9  -5.87  -2.89 
2001 03  7.21  -1.60   2.80 
2001 04 16.02   5.61  10.81 
2001 05 19.45   8.67  14.06 
2001 06 22.73  12.76  17.74 
2001 07 31.76  17.84  24.80 
2001 08 28.16  13.91  21.03 
2001 09 20.37  10.08  15.23 
2001 10 12.28   2.51   7.39 
2001 11  5.53    .64   3.08 
2001 12 -4.60 -13.29  -8.94 
2002 01 -1.58  -5.61  -3.59 
2002 02  5.68    .-5   2.81 
2002 03  9.79    .57   5.18 
2002 04 15.15   1.45   8.30 
2002 05 22.35   7.40  14.87 
2002 06 24.58  12.50  18.54 
2002 07 31.94  17.95  24.94 
2002 08 26.20  12.30  19.25 
2002 09 21.66  11.77  16.71 
2002 10 11.23   3.98   7.60 
2002 11  5.89    .88   3.38 
2002 12 -6.14 -13.26  -9.70 
2003 01 -1.78  -8.52  -5.15 
2005 08 27.62  13.41  20.51 
2008 08 30.41  12.43  21.42 
2009 04 15.83   -.68   7.57 
2010 08 33.09  15.07  24.08 
2012 08 30.04  15.72  22.88 
2012 09 24.30   7.57  15.93 
2013 02   .41 -99.99 -99.99 
2013 08 99.99  13.38 -99.99 
2014 05 99.99  11.60 -99.99 
