1980 06  21.08   8.38  14.73 
1980 07  23.81  10.97  17.39 
1980 08  19.92   9.26  14.59 
1980 09  14.91   3.95   9.43 
1980 10   8.66  -1.33   3.66 
1980 11   -.27  -9.27  -4.77 
1980 12 -12.33 -23.53 -17.93 
1981 01  -9.47 -20.03 -14.75 
1981 02  -6.18 -16.59 -11.38 
1981 03   1.85  -8.10  -3.12 
1981 04   8.33  -2.63   2.85 
1981 05  16.58   3.76  10.17 
1981 06  20.12   8.30  14.21 
1981 07  24.32  11.92  18.11 
1981 08  25.00  11.76  18.38 
1981 09  17.50   4.83  11.16 
1981 10   6.83  -1.23   2.80 
1981 11   3.23  -4.55   -.66 
1981 12 -99.99 -16.70 -99.99 
1982 01 -22.32 -32.90 -27.61 
1982 02 -11.21 -22.72 -16.96 
1982 03  -5.25 -14.11  -9.68 
1982 04   7.90  -4.78   1.56 
1982 05  15.66   5.21  10.43 
1982 06  20.63   5.42  13.02 
1982 07  23.09  10.92  17.00 
1982 08  20.97   8.93  14.95 
1982 09  16.74   4.28  10.51 
1982 10   9.18  -0.03   4.57 
1982 11  -5.34 -13.76  -9.55 
1982 12  -8.81 -17.20 -13.00 
1983 01 -99.99 -19.59 -99.99 
1983 02 -99.99 -17.04 -99.99 
1983 03  -3.98 -13.32  -8.64 
1983 04   5.16  -6.78   -.81 
1983 05  12.79   0.61   6.70 
1983 06  20.85   9.13  14.99 
1983 07  23.79  12.98  18.38 
1983 08  25.97  12.19  19.08 
1983 09  14.98   4.19   9.59 
1983 10   9.13  -1.40   3.86 
1983 11  -1.60  -6.60  -4.10 
1983 12 -19.98 -28.48 -24.23 
1984 01 -12.48 -21.90 -17.18 
1984 02  -2.91 -12.70  -7.80 
1984 03  -4.41 -14.44  -9.42 
1984 04  10.97   0.24   5.60 
1984 05  13.26   1.92   7.59 
1984 06  20.53   8.80  14.66 
1984 07  24.12  10.14  17.13 
1984 08  25.53  10.83  18.18 
1984 09  11.78   1.27   6.52 
1984 10   6.02  -3.21   1.40 
1984 11  -6.07 -14.40 -10.23 
1984 12 -17.94 -28.47 -23.20 
1985 01 -13.50 -26.19 -19.84 
1985 02 -14.67 -24.69 -19.68 
1985 03  -1.85 -14.00  -7.92 
1985 04 -99.99  -2.16 -99.99 
1985 05  16.96   4.06  10.51 
1985 06  15.06   5.52  10.29 
1985 07 -99.99   8.50 -99.99 
1985 08 -99.99   5.73 -99.99 
1985 09  10.67   1.79   6.23 
1985 10   7.10  -3.18   1.95 
1986 05  18.32   5.42  11.87 
