1981 01 32.09  22.50  27.30 
1981 02 33.80  23.60  28.70 
1981 03 36.00  24.20  30.10 
1981 04 33.70  24.70  29.20 
1981 05 32.80  24.80  28.80 
1981 06 32.70  24.40  28.55 
1981 07 32.20  23.70  27.95 
1981 08 32.50  23.80  28.15 
1981 09 31.40  24.00  27.70 
1981 10 31.70  23.80  27.75 
1981 11 30.40  23.40  26.90 
1981 12 30.70  23.30  27.00 
1982 01 32.40  22.80  27.60 
1982 02 34.70  22.70  28.70 
1982 03 35.09  23.50  29.30 
1982 04 33.30  24.40  28.84 
1982 05 32.30  24.70  28.50 
1982 06 32.30  24.30  28.30 
1982 07 31.00  23.70  27.35 
1982 08 31.30  23.90  27.59 
1982 09 31.40  24.10  27.75 
1982 10 31.50  23.60  27.55 
1982 11 32.00  23.70  27.85 
1982 12 31.30  23.90  27.59 
1983 01 32.70  24.00  28.35 
1983 02 35.00  22.70  28.85 
1983 03 35.80  24.10  29.95 
1983 04 36.20  24.30  30.25 
1983 05 33.20  25.00  29.10 
1983 06 32.90  24.70  28.80 
1983 07 31.80  24.30  28.05 
1983 08 31.50  24.40  27.95 
1983 09 31.20  23.90  27.55 
1983 10 31.10  24.10  27.60 
1983 11 31.80  23.80  27.80 
1983 12 30.50  23.70  27.10 
1984 01 31.70  23.10  27.40 
1984 02 32.20  23.60  27.90 
1984 03 33.70  23.70  28.70 
1984 04 33.00  24.00  28.50 
1984 05 32.50  24.50  28.50 
1984 06 31.40  23.90  27.65 
1984 07 31.30  23.60  27.45 
1984 08 31.90  24.50  28.20 
1984 09 31.40  23.80  27.59 
1984 10 31.40  23.80  27.59 
1984 11 32.40  23.60  28.00 
1984 12 31.10  23.50  27.30 
1985 01 32.70  23.40  28.05 
1985 02 33.59  23.70  28.65 
1985 03 33.30  23.80  28.55 
1985 04 33.20  24.40  28.80 
1985 05 32.59  24.40  28.50 
1985 06 32.30  24.30  28.30 
1985 07 31.80  23.10  27.45 
1985 08 31.70  23.60  27.65 
1985 09 31.10  23.40  27.25 
1985 10 30.80  23.70  27.25 
1985 11 31.40  23.60  27.50 
1985 12 31.60  23.10  27.35 
1986 01 31.30  22.80  27.05 
1986 02 33.80  21.90  27.84 
1986 03 34.30  23.40  28.84 
1986 04 34.40  23.60  29.00 
1986 05 32.00  22.90  27.45 
1986 06 32.30  22.50  27.40 
1986 07 32.40  22.10  27.25 
1986 08 31.50  21.80  26.65 
1986 09 30.50  21.30  25.90 
1986 10 30.80  21.00  25.90 
1986 11 30.30  20.10  25.20 
1986 12 31.80  20.50  26.15 
1987 01 32.50  20.29  26.40 
1987 02 34.59  18.79  26.70 
1987 03 35.00  20.40  27.70 
1987 04 35.59  20.90  28.25 
1987 05 32.80 -99.99 -99.99 
1987 06 32.90 -99.99 -99.99 
1987 07 32.50 -99.99 -99.99 
1987 08 31.50 -99.99 -99.99 
1987 09 31.30 -99.99 -99.99 
1987 10 32.30  24.00  28.15 
1987 11 31.60  23.80  27.70 
1987 12 30.90  23.60  27.25 
1988 01 33.40  24.10  28.75 
1988 02 34.40  24.00  29.20 
1988 03 34.90  24.40  29.65 
1988 04 34.20  24.50  29.35 
1988 05 32.50  24.80  28.65 
1988 06 32.50  24.10  28.30 
1988 07 31.80  23.50  27.65 
1988 08 31.80  23.60  27.70 
1988 09 30.60  23.50  27.05 
1988 10 30.90  23.60  27.25 
1988 11 30.50  23.30  26.90 
1988 12 30.90  23.20  27.05 
1989 01 32.59  23.80  28.20 
1989 02 34.00  22.10  28.05 
1989 03 34.09  23.10  28.59 
1989 04 32.70  23.90  28.30 
1989 05 32.50  24.10  28.30 
1989 06 32.20  23.80  28.00 
1989 07 31.60  24.10  27.85 
1989 08 31.00  23.80  27.40 
1989 09 31.50  23.90  27.70 
1989 10 30.70  23.80  27.25 
1989 11 31.90  23.80  27.84 
1989 12 32.30  23.60  27.95 
1990 01 33.20  23.30  28.25 
1990 02 35.20  24.30  29.75 
1990 03 35.70  23.70  29.70 
1990 04 34.00  24.70  29.35 
1990 05 32.59  24.60  28.59 
1990 06 32.40  24.50  28.45 
1990 07 31.50  23.70  27.60 
1990 08 32.20  24.40  28.30 
1990 09 30.70  23.60  27.15 
1990 10 32.30  23.80  28.05 
1990 11 31.30  23.80  27.55 
1990 12 31.90  24.00  27.95 
1991 01 33.30  23.90  28.59 
1991 02 35.20  23.30  29.25 
1991 03 35.09  23.60  29.34 
1991 04 34.80  23.90  29.34 
1991 05 32.70  24.50  28.60 
1991 06 32.80  24.40  28.59 
1991 07 31.40  23.90  27.65 
1991 08 31.50  24.00  27.75 
1991 09 30.70  23.80  27.25 
1991 10 31.40  23.40  27.40 
1991 11 32.09  23.70  27.90 
1991 12 31.70  23.80  27.75 
1992 01 32.59  23.90  28.25 
1992 02 33.80  23.10  28.45 
1992 03 35.70  23.60  29.65 
1992 04 35.30  24.80  30.05 
1992 05 33.40  24.60  29.00 
1992 06 32.00  24.40  28.20 
1992 07 31.70  23.70  27.70 
1992 08 31.40  23.90  27.65 
1992 09 31.50  23.60  27.55 
1992 10 31.00  23.30  27.15 
1992 11 31.00  23.40  27.20 
1992 12 31.50  23.30  27.40 
1993 01 32.59  23.70  28.15 
1993 02 34.09  23.00  28.55 
1993 03 33.90  23.60  28.75 
1993 04 34.20  24.20  29.20 
1993 05 33.50  24.50  29.00 
1993 06 32.70  24.30  28.50 
1993 07 31.40  24.00  27.70 
1993 08 31.90  24.10  28.00 
1993 09 31.20  23.40  27.30 
1993 10 31.20  23.50  27.35 
1993 11 31.80  23.60  27.70 
1993 12 30.90  23.20  27.05 
1994 01 32.90  23.60  28.25 
1994 02 34.20  22.90  28.55 
1994 03 33.50  24.10  28.80 
1994 04 33.50  23.90  28.70 
1994 05 32.00  24.70  28.35 
1994 06 31.90  24.00  27.95 
1994 07 31.80  24.00  27.90 
1994 08 31.40  23.50  27.45 
1994 09 31.00  23.40  27.20 
1994 10 31.90  23.30  27.59 
1994 11 31.70  24.20  27.95 
1994 12 32.59  23.20  27.90 
1995 01 33.40  24.00  28.70 
1995 02 34.50  23.10  28.80 
1995 03 34.40  23.50  28.95 
1995 04 35.09  23.90  29.50 
1995 05 33.90  24.50  29.20 
1995 06 33.00  24.50  28.75 
1995 07 32.40  23.80  28.10 
1995 08 31.10  23.80  27.45 
1995 09 31.30  23.90  27.59 
1995 10 31.70  23.80  27.75 
1995 11 31.40  23.90  27.65 
1995 12 31.20  22.90  27.05 
1996 01 32.50  22.80  27.65 
1996 02 33.40  23.30  28.35 
1996 03 35.59  23.40  29.50 
1996 04 33.40  24.20  28.80 
1996 05 32.59  24.70  28.65 
1996 06 32.50  24.50  28.50 
1996 07 32.20  24.50  28.35 
1996 08 31.30  23.80  27.55 
1996 09 31.20  23.90  27.55 
1996 10 31.00  23.60  27.30 
1996 11 30.60  23.30  26.95 
1996 12 30.40  22.80  26.59 
