1981 06 23.12  11.97  17.54 
1981 07 26.81  15.29  21.05 
1981 08 24.98  13.05  19.01 
1981 09 17.92   9.77  13.84 
1981 10 10.34   1.89   6.11 
1981 11  6.38  -1.48   2.45 
1981 12  -.52  -7.05  -3.78 
1982 01 -7.19 -19.15 -13.17 
1982 02 -2.62 -13.15  -7.88 
1982 03  2.81  -7.98  -2.58 
1982 04 10.20  -2.11   4.04 
1982 05 21.27   8.60  14.94 
1982 06 21.22  10.90  16.06 
1982 07 27.35  13.74  20.54 
1982 08 23.35  11.26  17.30 
1982 09 20.10   9.08  14.59 
1982 10 14.89   3.34   9.11 
1982 11  6.90   -.31   3.29 
1983 01 -1.92 -10.31  -6.11 
1983 02   .-2  -8.72  -4.37 
1983 03  4.61  -4.10    .25 
1983 04 10.38   -.22   5.08 
1983 07 28.28  13.44  20.86 
1983 08 26.32  13.08  19.70 
1983 09 22.20   8.52  15.36 
1983 10 12.89   2.27   7.58 
1983 11  5.17  -2.88   1.14 
1983 12 -3.24 -99.99 -99.99 
1984 01 -5.88 -15.57 -10.72 
1984 02  1.72 -99.99 -99.99 
1984 03  -.26 -11.81  -6.03 
1984 04 12.50   1.90   7.20 
1984 05 15.80   5.21  10.50 
1984 06 25.17  11.15  18.16 
1984 07 25.82  12.95  19.38 
1984 08 25.34  14.93  20.13 
1984 09 18.17   7.30  12.73 
1984 10 15.27   3.85   9.56 
1984 11  5.27  -2.65   1.31 
1984 12  2.18  -6.06  -1.94 
1985 01 -6.35 -16.75 -11.55 
1985 02 -2.00 -11.84  -6.92 
1985 03  4.28  -6.58  -1.14 
1985 04 13.38    .13   6.75 
1985 05 19.77   7.07  13.42 
1985 06 21.31   9.83  15.57 
1985 08 24.13  12.65  18.39 
1985 09 20.53   9.72  15.13 
1987 03  6.78 -99.99 -99.99 
1987 06 99.99  11.38 -99.99 
1987 11  6.38 -99.99 -99.99 
1988 02 -1.60 -99.99 -99.99 
1988 04 11.63 -99.99 -99.99 
1988 08 28.27 -99.99 -99.99 
1989 08 25.27 -99.99 -99.99 
1990 01  1.39 -99.99 -99.99 
1990 10 99.99   1.69 -99.99 
1993 06 23.17 -99.99 -99.99 
