1980 11 -4.94 -99.99 -99.99 
1981 02 -8.75 -17.18 -12.96 
1981 03   .83  -6.29  -2.73 
1981 04  1.64  -7.58  -2.97 
1981 05 14.30   2.24   8.27 
1981 06 16.45   4.39  10.42 
1981 07 15.74   7.13  11.43 
1981 08 16.82   4.29  10.55 
1981 09 99.99    .95 -99.99 
1981 10  1.74  -4.17  -1.21 
1981 11 -6.62 -15.03 -10.82 
1981 12 12.28 -19.27 -15.77 
1982 01 11.02 -99.99 -99.99 
1982 02 99.99 -16.12 -99.99 
1982 03 99.99 -14.06 -99.99 
1982 04 -3.74 -13.69  -8.71 
1982 05 99.99    .11 -99.99 
1982 06 99.99   7.30 -99.99 
1982 07 99.99   6.71 -99.99 
1982 08 17.29   6.00  11.64 
1982 09 12.31    .-6   6.12 
1982 10   .-4  -7.26  -3.65 
1982 11 -3.60 -11.90  -7.75 
1982 12 -8.93 -99.99 -99.99 
1983 01 12.56 -20.24 -16.40 
1983 02 -6.99 -16.79 -11.89 
1983 03 -3.25 -10.68  -6.96 
1983 04  2.13  -6.24  -2.05 
1983 05 99.99   2.43 -99.99 
1983 06 18.64   7.85  13.24 
1983 07 99.99   9.12 -99.99 
1983 08 14.64   6.11  10.37 
1983 09 99.99   1.04 -99.99 
1983 10 99.99  -5.88 -99.99 
1984 02 99.99 -30.38 -99.99 
1984 03 99.99  -8.76 -99.99 
1984 04 99.99  -9.54 -99.99 
1984 05 99.99  -1.24 -99.99 
1984 06 99.99   8.96 -99.99 
1984 07 99.99   9.07 -99.99 
1984 09 13.76   4.28   9.02 
1984 10 99.99  -3.59 -99.99 
1984 11 99.99 -11.52 -99.99 
1985 02 99.99 -18.62 -99.99 
1985 04 99.99 -16.27 -99.99 
1985 06 99.99   4.88 -99.99 
1985 07 19.99  10.66  15.32 
1985 08 99.99   8.99 -99.99 
1985 09  9.59   3.83   6.71 
1985 10  -.71  -5.52  -3.11 
1985 11 -4.03  -8.72  -6.37 
1985 12 -2.80  -6.51  -4.65 
1986 01 13.22 -18.02 -15.62 
1986 02 -4.58 -10.39  -7.48 
1986 03 -5.25 -14.63  -9.94 
1986 04 -1.77  -9.79  -5.78 
1986 05  8.45   -.41   4.02 
1986 06 18.39   8.72  13.55 
1986 07 17.48  10.18  13.83 
1986 08 12.92   7.92  10.42 
1986 09  8.68   4.94   6.81 
1986 10   .89  -3.54  -1.32 
1986 11 -4.98  -8.92  -6.95 
1986 12 -4.17  -7.03  -5.60 
1987 01 -9.08 -14.19 -11.63 
1987 02 -7.97 -13.45 -10.71 
1987 03 -1.51  -8.63  -5.07 
1987 04  -.47  -9.16  -4.81 
1987 05  8.45    .88   4.66 
1987 06 15.93   6.72  11.32 
1987 07 17.71  10.89  14.30 
1987 08 18.28   9.68  13.98 
1987 09  9.28   2.33   5.80 
1987 10  3.84   -.82   1.51 
1987 11 -7.78 -99.99 -99.99 
1988 01 -8.68 -99.99 -99.99 
1988 02 -9.93 -15.47 -12.70 
1988 03 10.03 -17.25 -13.64 
1988 04  -.61  -6.37  -3.49 
1988 05 11.51   3.46   7.48 
1988 06 99.99   7.48 -99.99 
1988 07 21.05  10.71  15.87 
1988 08 15.50   9.43  12.46 
1988 09 11.52   4.31   7.91 
1988 10   .44  -6.14  -2.85 
1988 11 10.30 -15.40 -12.85 
1988 12 -9.05 -16.62 -12.84 
1989 01 21.93 -99.99 -99.99 
1989 02 -1.74  -5.24  -3.48 
1989 03 -3.67 -10.91  -7.29 
1989 04   .62  -4.30  -1.84 
1989 05 99.99   -.23 -99.99 
1989 06 99.99   7.08 -99.99 
1989 07 99.99   8.72 -99.99 
1989 08 99.99   8.72 -99.99 
1989 09 10.98   6.13   8.55 
1989 10  1.26  -2.85   -.79 
1989 11 -9.77 -99.99 -99.99 
1989 12 -7.35 -99.99 -99.99 
1990 01 13.65 -99.99 -99.99 
1990 02 19.60 -27.21 -23.40 
1990 03 -4.34 -12.52  -8.43 
1990 04  5.07  -3.24    .91 
1990 05  9.42   2.75   6.08 
1990 06 16.54   6.95  11.74 
1990 07 19.41  10.90  15.15 
1990 12 10.21 -15.89 -13.05 
1991 01 11.74 -16.71 -14.23 
1991 02 11.86 -18.20 -15.03 
1991 03 -4.85 -12.25  -8.55 
1991 04  2.53  -4.73  -1.10 
1991 05 11.69   2.47   7.08 
1991 06 16.95   8.60  12.78 
