1973 08 32.57  19.26  25.91 
1973 09 33.34  19.62  26.48 
1973 10 32.88  18.61  25.74 
1973 11 31.99  16.45  24.22 
1973 12 30.97  14.51  22.74 
1974 01 30.80 -99.99 -99.99 
1974 02 31.31  14.06  22.68 
1974 03 31.44  14.15  22.79 
1974 04 32.31  14.88  23.59 
1974 05 33.29  17.56  25.42 
1974 06 33.59  17.43  25.51 
1974 07 33.07  18.35  25.71 
1974 08 32.66  18.15  25.40 
1974 09 32.12  18.86  25.49 
1974 10 32.18  17.96  25.07 
1974 11 30.09  17.20  23.65 
1974 12 30.43  15.58  23.00 
1975 01 31.25  13.27  22.26 
1975 02 31.81  12.02  21.91 
1975 03 31.39  13.85  22.62 
1975 04 32.03  14.70  23.36 
1975 05 33.64  17.53  25.58 
1975 06 33.87  17.54  25.71 
1975 07 33.48  17.68  25.58 
1975 08 33.59  19.19  26.39 
1975 09 33.14  18.45  25.80 
1975 10 32.99  18.25  25.62 
1975 12 30.09  16.08  23.08 
1976 01 30.62  14.69  22.65 
1976 02 31.56  12.58  22.07 
1976 09 32.93  20.32  26.63 
1976 10 32.73  20.33  26.53 
1976 11 31.67  18.44  25.05 
1976 12 30.69  16.15  23.42 
1977 01 30.41  16.25  23.33 
1977 02 30.98  15.64  23.31 
1977 03 31.81  15.94  23.87 
1977 04 31.98  17.61  24.79 
1977 05 32.09  19.83  25.96 
1977 06 33.75  19.34  26.55 
1977 07 32.82  18.82  25.82 
1977 08 32.53  19.23  25.88 
1977 09 32.83  20.40  26.61 
1977 10 32.59  19.69  26.14 
1977 11 32.23  18.87  25.55 
1978 03 31.87  16.03  23.95 
1978 04 31.96  16.87  24.41 
1978 06 33.77  19.17  26.47 
1978 10 31.80 -99.99 -99.99 
1978 11 32.18  18.18  25.18 
1978 12 31.93  16.20  24.06 
1979 01 30.79  15.78  23.28 
1979 02 31.66  15.51  23.58 
1979 03 31.99  15.45  23.72 
1979 05 32.80  20.86  26.83 
1979 06 33.07  21.69  27.38 
1979 07 33.65  20.94  27.29 
1979 08 32.84  20.92  26.88 
1979 09 32.64  21.14  26.89 
1979 10 33.41  20.63  27.02 
1979 11 31.79  19.10  25.44 
1979 12 31.34  16.78  24.06 
1980 01 31.18  16.29  23.73 
1980 02 31.94  16.04  23.99 
1980 03 32.31  15.36  23.83 
1980 04 32.98  17.29  25.13 
1980 08 33.73 -99.99 -99.99 
1980 09 33.36  20.71  27.03 
1980 10 32.91  20.63  26.77 
1981 05 32.28  22.00  27.14 
1981 06 32.84  20.80  26.82 
1981 07 33.41  20.83  27.12 
1981 08 33.43  20.77  27.10 
1981 09 33.23  20.41  26.82 
1981 10 32.34  20.16  26.25 
1981 11 31.95  19.84  25.89 
1981 12 30.69  18.29  24.49 
1982 01 30.73  15.91  23.32 
1982 02 30.90  15.86  23.38 
1982 03 31.83  15.00  23.41 
1982 04 32.06  16.95  24.51 
1982 05 31.82  19.19  25.50 
1982 06 33.34  19.46  26.41 
1982 07 33.08  19.70  26.39 
1982 08 33.41  19.54  26.48 
1982 10 33.12  18.73  25.92 
1982 11 32.18  17.54  24.86 
1982 12 31.44  16.06  23.75 
1983 01 31.69  15.66  23.67 
1983 02 32.00  14.91  23.45 
1983 03 33.31  16.50  24.90 
1983 04 33.25  16.53  24.89 
1983 05 33.25  16.68  24.96 
1983 11 32.08  17.75  24.91 
1983 12 31.64  16.56  24.09 
1984 03 31.32  16.96  24.14 
1984 04 31.72  18.23  24.97 
1985 06 32.30 -99.99 -99.99 
1985 07 32.66  21.80  27.23 
1985 08 32.32 -99.99 -99.99 
1987 05 32.52 -99.99 -99.99 
1987 07 33.70  21.19  27.44 
1987 09 33.70  21.32  27.51 
1987 10 33.90  20.93  27.41 
1987 11 32.41  20.07  26.24 
1987 12 31.46  19.46  25.46 
1988 01 31.45  16.96  24.21 
1988 02 31.40  16.34  23.87 
1988 03 31.18  16.77  23.97 
1988 04 32.25  19.74  25.99 
1988 05 33.00 -99.99 -99.99 
1988 06 33.23  21.94  27.58 
1988 07 33.88  21.46  27.67 
1988 08 31.73  20.66  26.19 
1988 09 31.99  20.61  26.30 
1988 10 32.12  20.75  26.43 
1988 11 31.33  18.99  25.16 
1988 12 30.38  16.90  23.64 
1989 01 29.72  16.56  23.14 
1989 02 29.88  15.99  22.93 
1989 03 29.98  16.21  23.09 
1989 04 30.46  16.82  23.64 
1989 05 31.05  19.12  25.09 
1989 06 31.33  19.62  25.47 
1989 07 32.73  20.55  26.64 
1989 08 32.12  20.76  26.43 
1989 09 31.93  21.06  26.49 
1989 10 31.93  20.01  25.97 
1989 11 31.35  19.48  25.41 
1989 12 30.90  17.26  24.08 
1990 01 30.27  16.49  23.38 
1990 02 30.52  15.60  23.06 
1990 03 29.91  16.48  23.19 
1990 04 31.29  18.48  24.88 
1990 05 31.53 -99.99 -99.99 
1990 06 31.95  21.13  26.54 
1990 07 32.27  20.71  26.49 
1990 08 32.68  20.76  26.72 
1990 09 32.36 -99.99 -99.99 
1990 10 31.34 -99.99 -99.99 
1990 11 31.77  19.16  25.46 
1990 12 30.26  18.04  24.15 
1991 01 30.60  15.65  23.12 
1991 02 29.89  18.11  24.00 
1991 03 30.80  17.83  24.31 
1991 05 31.09  19.77  25.43 
1991 07 32.09  21.10  26.59 
1991 09 32.50  20.81  26.66 
1991 10 31.86  20.04  25.95 
2002 01 32.09  17.70  24.90 
2002 02 31.62  16.56  24.09 
2002 03 32.15  18.25  25.20 
2002 04 31.37  21.39  26.38 
2002 05 33.46  21.78  27.62 
2002 06 34.04  23.22  28.63 
2002 07 34.84  22.17  28.50 
