1985 12 23.72  13.88  18.79 
1986 01 30.07  17.54  23.80 
1986 02 25.27  16.01  20.64 
1986 03 24.42  15.15  19.78 
1986 04 22.73  12.54  17.63 
1986 05 19.60  12.30  15.95 
1986 06 17.81  10.14  13.97 
1986 07 15.50   8.35  11.92 
1986 08 15.66   8.28  11.96 
1986 09 99.99  11.02 -99.99 
1986 10 99.99  10.72 -99.99 
1986 11 99.99  13.21 -99.99 
1986 12 99.99  14.48 -99.99 
1987 01 26.49  15.35  20.92 
1987 02 28.62  15.29  21.95 
1987 03 99.99  16.62 -99.99 
1987 04 99.99  14.48 -99.99 
1987 05 19.27  11.35  15.31 
1987 06 99.99  12.19 -99.99 
1987 07 16.79   9.71  13.25 
1987 08 17.79   9.51  13.65 
1987 09 19.70  10.33  15.01 
1987 10 20.29  11.34  15.82 
1987 11 23.34  12.91  18.12 
1987 12 25.38  15.76  20.57 
1988 01 26.62  16.04  21.33 
1988 02 30.86  18.54  24.70 
1988 03 28.75  18.06  23.40 
1988 04 24.49  15.97  20.23 
1988 05 20.21  13.96  17.09 
1988 06 17.99  11.30  14.64 
1988 07 16.67   9.54  13.10 
1988 08 17.20  10.09  13.65 
1988 09 18.28  11.95  15.11 
1988 10 19.27  12.56  15.91 
1988 11 23.76  12.90  18.33 
1988 12 26.70  15.29  20.99 
1989 01 99.99  18.29 -99.99 
1989 02 27.46  17.58  22.52 
1989 03 99.99  16.99 -99.99 
1989 04 22.94  14.53  18.73 
1989 05 20.49  12.31  16.40 
1989 06 99.99   9.67 -99.99 
1989 07 99.99   8.60 -99.99 
1989 08 99.99   8.78 -99.99 
1989 09 99.99  11.61 -99.99 
1989 10 99.99  11.29 -99.99 
1989 11 99.99  14.70 -99.99 
1989 12 99.99  14.46 -99.99 
1990 01 25.95  15.45  20.70 
1990 02 28.92  18.49  23.70 
1990 03 99.99  16.99 -99.99 
1990 04 99.99  15.05 -99.99 
1990 05 99.99  11.82 -99.99 
1990 06 99.99   8.72 -99.99 
1990 07 99.99   8.00 -99.99 
1990 08 99.99   9.10 -99.99 
1990 09 99.99  11.28 -99.99 
1990 10 18.91  11.38  15.14 
1990 11 22.59  13.17  17.88 
1990 12 24.95  14.78  19.86 
1991 01 29.58  16.95  23.26 
1991 02 27.88  16.26  22.07 
1991 03 26.32  16.54  21.43 
1991 04 24.51  15.15  19.83 
1991 05 20.17  12.90  16.53 
1991 06 17.48  12.32  14.90 
1991 07 16.67  10.47  13.57 
1991 08 17.25  10.29  13.77 
1991 09 17.29  10.86  14.08 
1991 10 21.48  12.17  16.82 
1991 11 21.48  12.48  16.98 
1991 12 26.68  15.65  21.16 
1992 01 30.02  18.27  24.14 
1992 02 27.62  18.19  22.90 
1992 03 25.55  16.58  21.06 
1992 04 23.85  15.40  19.62 
1992 05 19.07  12.02  15.54 
1992 06 17.60  10.70  14.15 
1992 07 17.06  11.60  14.33 
1992 08 16.04   9.85  12.95 
1992 09 16.89   9.54  13.21 
1992 10 20.42  11.51  15.96 
1992 11 22.11  13.44  17.77 
1992 12 25.36  14.97  20.16 
1993 01 27.99  16.54  22.27 
1993 02 28.15  16.06  22.10 
1993 03 25.06  15.42  20.24 
1993 04 21.08  13.51  17.29 
1993 05 19.39  11.70  15.54 
1993 06 16.95   9.97  13.46 
1993 07 16.15   9.22  12.68 
1993 08 15.98   9.57  12.77 
1993 09 17.83  10.55  14.19 
1993 10 18.79  10.87  14.83 
1993 11 23.76  13.85  18.80 
1993 12 27.05  14.57  20.81 
1994 01 27.75  16.14  21.94 
1994 02 27.37  16.20  21.78 
1994 03 27.44  17.36  22.40 
1994 04 24.09  15.37  19.73 
1994 05 20.74  12.71  16.72 
1994 06 17.42  10.66  14.04 
1994 07 16.77  10.69  13.73 
1994 08 17.56  10.08  13.82 
1994 09 19.08  10.49  14.78 
1994 10 20.37  11.21  15.79 
1994 11 24.67  14.34  19.50 
1994 12 27.84  16.10  21.97 
1995 01 29.56  17.75  23.65 
1995 02 29.15  18.28  23.71 
1995 03 28.52  17.29  22.90 
1995 04 23.55  14.00  18.77 
1995 05 19.39  10.88  15.13 
1995 06 17.04   9.99  13.52 
1995 07 16.42  10.28  13.35 
1995 08 17.39  10.75  14.07 
1995 09 18.44  10.77  14.60 
1995 10 20.37  12.42  16.39 
