1980 09  15.69   -.37   7.66 
1980 10  10.55  -6.18   2.18 
1980 11   3.93 -10.09  -3.08 
1980 12   3.12  -9.97  -3.42 
1981 01   3.87 -10.85  -3.49 
1981 02   1.45 -13.80  -6.17 
1981 03   5.65  -9.54  -1.94 
1981 04   7.72  -6.59   0.56 
1981 05  11.06   -.94   5.06 
1981 06  15.61   0.89   8.25 
1981 07  21.95   2.99  12.47 
1981 08  24.98   3.69  14.33 
1981 09  18.43  -1.38   8.52 
1981 10   7.46  -6.14   0.66 
1981 11   4.86  -8.58  -1.85 
1981 12  -2.06 -15.36  -8.71 
1982 01  -2.88 -17.86 -10.37 
1982 02   -.62 -17.77  -9.19 
1982 03   2.43 -11.34  -4.45 
1982 04   4.69 -11.70  -3.50 
1982 05  10.09  -3.76   3.16 
1982 06  16.87   1.22   9.04 
1982 07  20.78   3.21  11.99 
1982 08  23.84   3.39  13.61 
1982 09  14.79  -1.50   6.64 
1982 10   8.09  -5.74   1.17 
1982 11   0.84 -13.95  -6.55 
1982 12  -1.80 -15.53  -8.66 
1983 01   2.23 -12.68  -5.22 
1983 02   2.26 -14.13  -5.93 
1983 03   4.07 -10.16  -3.04 
1983 04 -99.99  -8.78 -99.99 
1983 05  11.33  -3.40   3.96 
1983 06  16.24   0.04   8.14 
1983 07  21.33   2.72  12.02 
1983 08  23.46   5.53  14.49 
1983 09  15.34  -2.61   6.36 
1983 10  10.46  -4.64   2.91 
1983 11   2.04  -9.02  -3.49 
1983 12 -99.99 -24.38 -99.99 
1984 01   0.46 -13.89  -6.71 
1984 02   1.89 -13.99  -6.05 
1984 03   2.70 -10.16  -3.73 
1984 04   5.94  -7.17   -.61 
1984 05  11.86  -3.28   4.29 
1984 06  16.12   0.01   8.07 
1984 07  22.50   3.52  13.01 
1984 08  23.12   4.28  13.70 
1984 09  14.21  -2.93   5.64 
1984 10   6.72  -8.02   -.65 
1984 11   2.01 -99.99 -99.99 
1984 12  -2.94 -18.44 -10.69 
1985 01   -.61 -17.40  -9.00 
1985 02  -2.71 -20.71 -11.70 
1985 03   2.86 -15.02  -6.08 
1985 04   9.77  -5.90   1.93 
1985 05  15.27  -2.46   6.40 
1985 06  18.57   -.71   8.93 
1985 07  26.70   4.05  15.37 
1985 08  20.24   0.04  10.14 
1985 09  12.18  -5.04   3.57 
1985 10   8.57  -9.10   -.26 
1985 11 -99.99 -18.16 -99.99 
1985 12 -99.99 -18.81 -99.99 
1986 01   2.84 -14.73  -5.94 
1986 02   1.45 -14.36  -6.45 
1986 03 -99.99  -6.40 -99.99 
1986 04 -99.99  -6.28 -99.99 
