1980 11  7.86    .58   4.22 
1981 01 -2.77  -9.18  -5.97 
1981 02  2.62  -4.52   -.95 
1981 03  7.47  -1.43   3.02 
1981 04 15.47   5.73  10.60 
1981 05 18.95   9.60  14.27 
1981 06 25.88  16.87  21.37 
1981 07 27.42  18.77  23.09 
1981 08 26.27  17.68  21.97 
1981 09 20.23  13.25  16.74 
1981 10 13.08   6.08   9.58 
1981 11  8.82   1.95   5.38 
1981 12   .74  -4.10  -1.68 
1982 01 -3.18 -10.47  -6.82 
1982 02 -1.79  -7.72  -4.75 
1982 03  5.86  -2.84   1.51 
1982 04 12.40 -99.99 -99.99 
1982 05 24.10  12.96  18.53 
1982 06 23.48 -99.99 -99.99 
1982 07 28.18  18.07  23.12 
1982 08 25.84  16.82  21.33 
1982 09 22.47  12.48  17.47 
1982 10 17.10   7.71  12.40 
1982 11  9.17   2.27   5.72 
1982 12  7.14   -.48   3.33 
1983 01  1.16  -5.21  -2.02 
1983 02  3.38  -4.67   -.64 
1983 03  7.97   -.45   3.76 
1983 04 11.74   2.61   7.17 
1983 05 17.81 -99.99 -99.99 
1983 06 26.88  15.22  21.05 
1983 07 29.00  19.65  24.32 
1983 08 28.63  19.20  23.91 
1983 09 99.99  14.40 -99.99 
1983 10 15.52   8.10  11.81 
1983 11  9.59   1.62   5.60 
1983 12 -1.84  -9.43  -5.64 
1984 01 -3.00 -10.58  -6.79 
1984 02  5.44  -3.24   1.10 
1984 03  2.24  -6.00  -1.88 
1984 04 13.02   3.92   8.47 
1984 05 18.46   7.69  13.08 
1984 06 27.25  17.17  22.21 
1984 07 28.00  18.07  23.03 
1984 08 27.95 -99.99 -99.99 
1984 09 21.20  13.41  17.30 
1984 10 17.87 -99.99 -99.99 
1984 11  8.50   2.48   5.49 
1984 12 -1.48 -99.99 -99.99 
1985 01 -2.11  -7.70  -4.91 
1985 02   .23  -6.70  -3.23 
1985 03  8.22   1.05   4.64 
1985 04 17.93   7.03  12.48 
1985 05 23.22  11.98  17.59 
1985 06 24.00  14.07  19.03 
1985 07 27.61  19.39  23.50 
1985 08 25.49  17.58  21.53 
1985 09 23.45  15.22  19.33 
1985 10 16.85   9.63  13.24 
1985 11  8.79   3.35   6.07 
1985 12  -.68  -7.36  -4.02 
1986 01   .-5  -6.84  -3.44 
1986 02  -.44  -5.23  -2.83 
1986 03  9.42 -99.99 -99.99 
1986 04 16.12   5.09  10.60 
1986 05 21.06  11.75  16.40 
1986 06 25.51  15.63  20.57 
1986 07 28.77  19.27  24.02 
1986 08 25.66  15.82  20.74 
1986 09 23.65  14.30  18.97 
1986 10 15.79   8.79  12.29 
1986 11  7.48   1.44   4.46 
1986 12  2.27  -1.89    .19 
1987 01   .45  -4.66  -2.10 
1987 02  2.86  -4.37   -.75 
1987 03  8.92 -99.99 -99.99 
1987 04 15.40   6.07  10.73 
1987 05 23.43 -99.99 -99.99 
1987 06 27.25  17.59  22.42 
1987 07 29.00  20.93  24.96 
1987 08 26.47  18.62  22.54 
1987 09 23.03  15.44  19.23 
1987 10 13.15   5.91   9.53 
1987 11  9.83   4.07   6.95 
1987 12  4.21   -.81   1.70 
1988 01  -.32  -7.37  -3.84 
1988 02  -.38  -7.22  -3.80 
1988 03  7.48  -1.48   3.00 
1988 04 13.95 -99.99 -99.99 
1988 05 22.45  11.11  16.78 
1988 06 28.38 -99.99 -99.99 
1988 07 31.02  20.84  25.93 
1988 08 29.40 -99.99 -99.99 
1988 09 23.05 -99.99 -99.99 
1988 10 12.08   5.22   8.64 
1988 11  9.53   3.48   6.50 
1988 12  2.47  -4.32   -.92 
1989 01  4.31  -2.97    .66 
1989 02 -1.04  -7.07  -4.05 
1989 03  6.02  -2.76   1.63 
1989 04 12.45   2.95   7.70 
1989 05 20.11   9.87  14.99 
1989 06 24.80  16.02  20.41 
1989 07 27.61  18.57  23.09 
1989 08 26.44  17.54  21.99 
1989 09 21.33  13.00  17.16 
1989 10 17.71   5.39  11.55 
1989 11  7.77    .12   3.94 
1989 12 -3.56 -12.05  -7.80 
1990 01  4.35  -4.13    .10 
1990 03  8.80  -1.34   3.73 
1990 04 15.44 -99.99 -99.99 
1990 05 18.87   9.07  13.97 
1990 06 25.88  15.22  20.55 
1990 07 26.74  17.66  22.20 
1990 08 26.11  14.70  20.40 
1990 09 22.53  12.09  17.31 
1991 01  -.52  -6.18  -3.35 
1991 02  3.84  -3.72    . 5 
1991 03  8.74    .18   4.46 
1991 07 28.95  19.46  24.21 
1991 08 27.52  18.42  22.97 
1991 09 22.28  13.33  17.80 
1991 10 16.50 -99.99 -99.99 
1991 11 99.99   1.00 -99.99 
1991 12  3.89  -2.53    .68 
1992 01  1.31  -4.30  -1.49 
1992 02  3.07  -4.39   -.66 
1992 03  6.10  -2.41   1.84 
1992 04 12.40   3.60   8.00 
1992 05 20.19  10.00  15.09 
1992 06 23.53  13.54  18.53 
1992 07 24.90  16.85  20.87 
1992 08 24.37  15.45  19.91 
1992 09 21.83  13.43  17.63 
1992 10 14.66   6.05  10.35 
1992 11  7.32   1.88   4.60 
1992 12  3.98  -2.47    .75 
1993 01  1.71  -4.03  -1.16 
1993 02   .11  -7.62  -3.75 
1993 05 20.57   9.72  15.14 
1993 06 24.15  15.50  19.82 
1993 07 28.97  19.95  24.46 
1993 08 28.24 -99.99 -99.99 
1993 10 15.23   6.09  10.66 
1993 11  8.39   1.16   4.77 
