1976 09 20.76 -99.99 -99.99 
1982 09 22.30  14.71  18.50 
1982 11  9.87   3.84   6.85 
1982 12  8.25   3.99   6.12 
1983 01  4.80   1.42   3.11 
1983 03  7.12   1.13   4.12 
1983 04 14.32   6.95  10.63 
1983 06 21.98  15.56  18.77 
1983 07 23.86  18.70  21.28 
1983 08 22.72  17.74  20.23 
1983 09 21.48  13.67  17.57 
1984 01  5.78   1.82   3.80 
1985 01  1.94  -2.65   -.35 
1985 02 -3.26  -7.94  -5.60 
1985 03   .36  -5.30  -2.47 
1985 04 12.21   6.26   9.23 
1985 05 18.60  12.32  15.46 
1985 06 21.35  15.50  18.42 
1985 07 23.12  16.87  19.99 
1985 08 25.81  18.57  22.18 
1985 09 18.78  13.51  16.14 
1985 10 12.48   7.21   9.84 
1985 11  8.04   2.83   5.43 
1985 12  4.73    .57   2.65 
1986 01  6.59   2.33   4.46 
1986 03  5.05   -.28   2.38 
1986 04 14.52   7.08  10.80 
1986 07 24.93  18.36  21.64 
1986 08 25.81  18.69  22.25 
1986 09 21.36  14.40  17.88 
1986 10 13.78   7.59  10.68 
1987 03  -.87  -6.10  -3.48 
1987 04  8.45   4.39   6.42 
1987 06 21.38  16.46  18.92 
1987 07 25.49  19.43  22.46 
1987 08 22.73  16.87  19.79 
1987 10 13.21   6.91  10.05 
1987 11  8.82   5.00   6.91 
1987 12  4.62    .18   2.39 
1988 01  2.14  -1.78    .18 
1988 02  4.84  -1.66   1.59 
1988 03  7.49   2.49   4.98 
1988 04 11.39   6.01   8.70 
1988 05 17.42  11.19  14.30 
1988 06 22.55  16.93  19.74 
1988 07 26.34  21.32  23.83 
1988 08 25.38  19.23  22.30 
1988 09 19.59  14.50  17.04 
1988 10 13.94   8.26  11.10 
1988 11  6.13   1.00   3.56 
1988 12  4.62    .92   2.77 
1989 02  5.13   1.23   3.18 
1989 03  8.58   3.81   6.19 
1989 04 15.45   8.04  11.74 
1989 05 18.27  11.78  15.02 
1989 06 22.24  15.05  18.64 
1989 07 25.06  17.99  21.52 
1989 08 26.48  18.73  22.60 
1989 10 15.32   9.59  12.45 
1989 11  8.77   3.25   6.01 
1989 12  5.75   1.42   3.58 
1990 01  3.29   -.26   1.51 
1990 02  5.07   1.19   3.13 
1990 03  8.75   3.07   5.91 
1990 05 17.24  10.08  13.66 
1990 06 21.46  15.51  18.48 
1990 07 24.92  17.73  21.32 
1990 08 24.59  17.56  21.07 
1990 09 19.87  13.53  16.70 
1990 10 14.79   7.62  11.20 
1990 11 13.00   7.71  10.35 
1991 01  4.06    .-8   1.99 
1991 02   .86  -4.19  -1.66 
1991 05 17.20  10.43  13.81 
1991 08 25.74  19.15  22.44 
1991 09 20.62  13.21  16.91 
1991 11  8.81   3.57   6.19 
1992 02  2.42  -2.41    . 0 
1992 03  6.58   2.08   4.33 
1992 04 12.17   5.23   8.70 
1992 05 17.02   8.78  12.90 
1992 06 21.94  16.21  19.08 
1992 07 24.37  17.31  20.84 
1992 08 27.47  18.90  23.18 
1992 09 19.73  12.54  16.13 
1992 10 15.39   9.72  12.55 
1992 12  2.17  -1.92    .12 
1993 01  2.40  -2.16    .12 
1993 02  2.20  -2.73   -.26 
1993 03  5.76    .92   3.34 
1993 04 10.97   4.57   7.77 
1993 05 16.94  11.19  14.06 
1993 06 21.80  15.83  18.81 
1993 08 24.96  17.20  21.08 
1994 02  1.51  -5.59  -2.04 
1994 03  6.53    .66   3.59 
1994 04 14.85   7.57  11.21 
1994 05 17.70  10.95  14.32 
1994 06 21.14  16.43  18.78 
1994 09 25.04  17.31  21.17 
1994 10 17.69  10.21  13.95 
1994 11  8.35   2.20   5.28 
1994 12  4.21   -.78   1.71 
1995 01  2.95 -99.99 -99.99 
1995 11 99.99   3.54 -99.99 
1996 08 99.99  17.15 -99.99 
1996 09 99.99  13.92 -99.99 
1996 10 99.99   8.24 -99.99 
2000 01 99.99  -2.45 -99.99 
2000 03 99.99   1.91 -99.99 
2000 04 17.95   9.14  13.54 
2000 05 21.06  12.13  16.59 
2000 06 25.41  16.24  20.82 
2000 07 28.66  19.70  24.18 
2000 08 29.76  19.70  24.73 
2000 09 20.82  13.81  17.31 
2000 10 16.09   9.05  12.57 
2000 11 13.41   6.03   9.72 
2001 01  6.50   1.65   4.07 
2001 02  5.84   -.18   2.83 
2001 03 10.60   4.09   7.34 
2001 04 15.21   7.95  11.58 
2001 05 20.10  11.86  15.98 
2001 06 22.86  16.50  19.68 
2001 07 32.64  22.67  27.65 
2001 08 31.50  20.85  26.17 
2001 09 24.02  14.73  19.37 
2001 10 99.99   8.68 -99.99 
2001 11 99.99   4.60 -99.99 
2002 09 99.99  16.54 -99.99 
2002 10 99.99  10.52 -99.99 
2003 01  3.78  -1.03   1.37 
2003 02 99.99  -5.83 -99.99 
2003 03  5.45  -1.20   2.12 
2003 04 12.60   4.67   8.64 
2003 05 23.16  13.58  18.36 
2003 06 25.50  17.10  21.30 
2003 07 26.69  18.74  22.71 
2003 08 28.49  19.60  24.04 
2003 09 22.68  13.58  18.13 
2003 10 16.60   9.33  12.96 
2003 11  9.85   5.06   7.46 
2003 12  6.62   2.33   4.48 
2004 01  5.02    . 9   2.55 
2004 02  5.98   -.36   2.81 
2004 03  9.60   3.62   6.61 
2004 04 14.41   7.05  10.73 
2005 02 99.99  -1.13 -99.99 
2005 03 99.99   -.25 -99.99 
2006 06 99.99  17.20 -99.99 
2007 02 99.99    .10 -99.99 
2008 07 29.79  19.75  24.77 
