1981 01 37.70  20.20  28.95 
1981 02 37.90  21.00  29.45 
1981 03 35.70  23.90  29.80 
1981 04 36.20  24.20  30.20 
1981 05 33.50  22.80  28.15 
1981 06 32.90  21.90  27.40 
1981 07 30.40  20.80  25.59 
1981 08 31.50  21.00  26.25 
1981 09 32.20  20.90  26.55 
1981 10 35.09  21.10  28.09 
1981 11 35.30  20.40  27.84 
1981 12 37.80  20.29  29.05 
1982 01 37.50  22.00  29.75 
1982 02 37.30  20.40  28.84 
1982 03 38.50  23.80  31.15 
1982 04 35.80  24.20  30.00 
1982 05 33.00  22.80  27.90 
1982 06 31.40  21.90  26.65 
1982 07 30.80  21.30  26.05 
1982 08 30.70  20.80  25.75 
1982 09 33.50  21.40  27.45 
1982 10 32.40  21.30  26.85 
1982 11 33.00  20.80  26.90 
1982 12 36.09  20.90  28.50 
1983 01 35.40  18.60  27.00 
1983 02 39.09  22.00  30.55 
1983 03 39.80  24.30  32.05 
1983 04 36.20  23.90  30.05 
1983 05 35.09  23.80  29.45 
1983 06 32.70  22.80  27.75 
1983 07 32.09  21.40  26.75 
1983 08 30.70  21.40  26.05 
1983 09 32.20  21.00  26.60 
1983 10 31.90  21.20  26.55 
1983 11 34.00  21.40  27.70 
1983 12 35.70  19.10  27.40 
1984 01 35.59  18.00  26.80 
1984 02 38.70  21.50  30.10 
1984 03 39.00  24.20  31.60 
1984 04 34.80  23.30  29.05 
1984 05 33.70  23.10  28.40 
1984 06 32.20  21.70  26.95 
1984 07 30.50  20.90  25.70 
1984 08 31.30  20.70  26.00 
1984 09 33.09  20.70  26.90 
1984 10 35.80  20.80  28.30 
1984 11 34.40  20.80  27.60 
1984 12 36.59  21.00  28.80 
1985 01 37.90  22.90  30.40 
1985 02 36.59  19.79  28.20 
1985 03 36.40  22.80  29.60 
1985 04 32.30  21.50  26.90 
1985 05 32.40  22.10  27.25 
1985 06 31.40  21.00  26.20 
1985 07 30.60  19.70  25.15 
1985 08 31.20  20.50  25.85 
1985 09 32.50  21.10  26.80 
1985 10 34.59  21.30  27.95 
1985 11 35.59  21.40  28.50 
1985 12 36.50  20.20  28.35 
1986 01 37.59  19.00  28.30 
1986 02 37.40  22.50  29.95 
1986 03 35.70  22.40  29.05 
1986 04 34.90  23.30  29.10 
1986 05 33.80  22.90  28.34 
1986 06 31.00  21.10  26.05 
1986 07 30.10  20.80  25.45 
1986 08 33.09  20.90  27.00 
1986 09 32.50  21.00  26.75 
1986 10 34.50  21.30  27.90 
1986 11 35.09  21.50  28.30 
1986 12 34.90  19.40  27.15 
1987 01 37.40  19.60  28.50 
1987 02 39.20  23.00  31.10 
1987 03 37.70  23.50  30.60 
1987 04 36.40  23.80  30.10 
1987 05 32.59  22.00  27.30 
1987 06 31.90  22.40  27.15 
1987 07 34.00  21.90  27.95 
1987 08 34.50  22.00  28.25 
1987 09 35.30  21.60  28.45 
1987 10 34.50  21.90  28.20 
1987 11 34.90  21.90  28.40 
1987 12 37.30  21.10  29.20 
1988 01 36.70  21.30  29.00 
1988 02 39.09  23.50  31.30 
1988 03 38.30  24.30  31.30 
1988 04 36.20  23.60  29.90 
1988 05 33.40  22.50  27.95 
1988 06 32.90  21.20  27.05 
1988 07 30.40  20.60  25.50 
1988 08 31.30  21.00  26.15 
1988 09 31.50  21.10  26.30 
1988 10 33.70  21.00  27.35 
1988 11 34.90  21.10  28.00 
1988 12 35.80  18.50  27.15 
1989 01 33.40  16.10  24.75 
1989 02 35.59  19.10  27.34 
1989 03 36.20  22.10  29.15 
1989 04 33.30  21.80  27.55 
1989 05 32.40  21.70  27.05 
1989 06 30.10  20.60  25.35 
1989 07 32.40  20.80  26.60 
1989 08 33.40  21.00  27.20 
1989 09 34.00  21.40  27.70 
1989 10 35.20  21.50  28.35 
1989 11 34.70  21.00  27.85 
1989 12 35.90  18.00  26.95 
1990 01 36.30  20.60  28.45 
1990 02 36.30  22.40  29.34 
1990 03 36.59  23.00  29.80 
1990 04 36.30  23.70  30.00 
1990 05 34.70  23.00  28.85 
1990 06 34.80  23.00  28.90 
1990 07 31.70  21.20  26.45 
1990 08 31.50  21.30  26.40 
1990 09 32.59  21.40  27.00 
1990 10 33.80  21.50  27.65 
1990 11 34.80  20.50  27.65 
1990 12 36.20  21.50  28.85 
