1971 01 99.99 -99.99  22.60 
1971 02 99.99 -99.99  22.50 
1971 03 99.99 -99.99  22.60 
1971 04 99.99 -99.99  23.00 
1971 05 99.99 -99.99  22.70 
1971 06 99.99 -99.99  23.10 
1971 07 99.99 -99.99  23.80 
1971 08 99.99 -99.99  23.20 
1971 09 99.99 -99.99  23.60 
1971 10 99.99 -99.99  22.70 
1971 11 99.99 -99.99  20.90 
1971 12 99.99 -99.99  20.90 
1972 01 99.99 -99.99  22.60 
1972 02 99.99 -99.99  23.50 
1972 03 99.99 -99.99  22.80 
1972 04 99.99 -99.99  23.40 
1972 05 99.99 -99.99  23.60 
1972 06 99.99 -99.99  23.90 
1972 07 99.99 -99.99  25.60 
1972 08 99.99 -99.99  25.30 
1972 09 99.99 -99.99  25.00 
1972 10 99.99 -99.99  24.00 
1972 11 99.99 -99.99  23.30 
1972 12 99.99 -99.99  23.70 
1973 01 99.99 -99.99  25.00 
1973 02 99.99 -99.99  25.60 
1973 03 99.99 -99.99  25.10 
1973 04 99.99 -99.99  24.20 
1973 05 99.99 -99.99  23.70 
1973 06 99.99 -99.99  23.30 
1973 07 99.99 -99.99  23.80 
1973 08 99.99 -99.99  23.50 
1973 09 99.99 -99.99  23.20 
1973 10 99.99 -99.99  23.10 
1973 11 99.99 -99.99  22.70 
1973 12 99.99 -99.99  22.90 
1974 01 99.99 -99.99  22.80 
1974 02 99.99 -99.99  23.00 
1974 03 99.99 -99.99  22.90 
1974 04 99.99 -99.99  23.20 
1974 05 99.99 -99.99  22.70 
1974 06 99.99 -99.99  22.60 
1974 07 99.99 -99.99  23.40 
1974 08 99.99 -99.99  24.80 
1974 09 99.99 -99.99  23.20 
1974 10 99.99 -99.99  22.40 
1974 11 99.99 -99.99  22.60 
1974 12 99.99 -99.99  22.90 
1975 01 99.99 -99.99  23.90 
1975 02 99.99 -99.99  22.80 
1975 03 99.99 -99.99  23.10 
1975 04 99.99 -99.99  23.40 
1975 05 99.99 -99.99  22.90 
1975 06 99.99 -99.99  23.30 
1975 07 99.99 -99.99  22.80 
1975 08 99.99 -99.99  23.60 
1975 09 99.99 -99.99  23.20 
1975 10 99.99 -99.99  22.60 
1975 11 99.99 -99.99  22.30 
1975 12 99.99 -99.99  21.70 
1976 01 99.99 -99.99  23.10 
1976 02 99.99 -99.99  23.10 
1976 03 99.99 -99.99  23.00 
1976 04 99.99 -99.99  22.90 
1976 05 99.99 -99.99  23.00 
1976 06 99.99 -99.99  23.50 
1976 07 99.99 -99.99  25.40 
1976 08 99.99 -99.99  26.00 
1976 09 99.99 -99.99  25.90 
1976 10 99.99 -99.99  23.30 
1976 11 99.99 -99.99  23.10 
1976 12 99.99 -99.99  23.10 
1977 01 99.99 -99.99  24.80 
1977 02 99.99 -99.99  24.10 
1977 03 99.99 -99.99  25.20 
1977 04 99.99 -99.99  23.70 
1977 05 99.99 -99.99  23.50 
1977 06 99.99 -99.99  23.60 
1977 07 99.99 -99.99  25.10 
1977 08 99.99 -99.99  24.80 
1977 09 99.99 -99.99  25.10 
1977 10 99.99 -99.99  23.40 
1977 11 99.99 -99.99  22.90 
1977 12 99.99 -99.99  24.00 
1978 01 99.99 -99.99  24.90 
1978 02 99.99 -99.99  25.40 
1978 03 99.99 -99.99  24.20 
1978 04 99.99 -99.99  22.80 
1978 05 99.99 -99.99  23.70 
1978 06 99.99 -99.99  23.70 
1978 07 99.99 -99.99  23.80 
1978 08 99.99 -99.99  25.30 
1978 09 99.99 -99.99  24.70 
1978 10 99.99 -99.99  23.30 
1978 11 99.99 -99.99  23.40 
1978 12 99.99 -99.99  23.10 
1979 01 99.99 -99.99  23.80 
1979 02 99.99 -99.99  24.90 
1979 03 99.99 -99.99  23.30 
1979 04 99.99 -99.99  23.50 
1979 05 99.99 -99.99  23.30 
1979 06 99.99 -99.99  24.20 
1979 07 99.99 -99.99  25.10 
1979 08 99.99 -99.99  25.00 
1979 09 99.99 -99.99  23.40 
1979 10 99.99 -99.99  23.00 
1979 11 99.99 -99.99  22.90 
1979 12 99.99 -99.99  23.60 
1980 01 99.99 -99.99  24.30 
1980 02 99.99 -99.99  23.50 
1980 03 99.99 -99.99  24.70 
1980 04 99.99 -99.99  24.60 
1980 05 99.99 -99.99  24.10 
1980 06 99.99 -99.99  24.20 
1980 07 99.99 -99.99  25.10 
1980 08 99.99 -99.99  25.70 
1980 09 99.99 -99.99  25.30 
1980 10 99.99 -99.99  22.90 
1980 11 99.99 -99.99  22.80 
1980 12 99.99 -99.99  22.70 
1981 01 99.99 -99.99  24.10 
1981 02 99.99 -99.99  23.90 
1981 03 99.99 -99.99  24.80 
1981 04 99.99 -99.99  23.80 
1981 05 99.99 -99.99  23.30 
1981 06 99.99 -99.99  23.80 
1981 07 99.99 -99.99  24.60 
1981 08 99.99 -99.99  24.40 
1981 09 99.99 -99.99  24.50 
1981 10 99.99 -99.99  23.40 
1981 11 99.99 -99.99  23.30 
1981 12 99.99 -99.99  23.90 
1982 01 99.99 -99.99  23.80 
1982 02 99.99 -99.99  23.70 
1982 03 99.99 -99.99  23.30 
1982 04 99.99 -99.99  23.00 
1982 05 99.99 -99.99  23.60 
1982 06 99.99 -99.99  24.70 
1982 07 99.99 -99.99  25.00 
1982 08 99.99 -99.99  26.90 
1982 09 99.99 -99.99  25.20 
1982 10 99.99 -99.99  22.90 
1982 11 99.99 -99.99  23.40 
1982 12 99.99 -99.99  23.30 
1983 01 99.99 -99.99  25.10 
1983 02 99.99 -99.99  25.80 
1983 03 99.99 -99.99  24.80 
1983 04 99.99 -99.99  24.40 
1983 05 99.99 -99.99  24.60 
1983 06 99.99 -99.99  25.40 
1983 07 99.99 -99.99  26.10 
1983 08 99.99 -99.99  26.80 
1983 09 99.99 -99.99  26.30 
1983 10 99.99 -99.99  24.40 
1983 11 99.99 -99.99  23.90 
1983 12 99.99 -99.99  23.10 
1984 01 99.99 -99.99  22.90 
1984 02 99.99 -99.99  23.20 
1984 03 99.99 -99.99  23.90 
1984 04 99.99 -99.99  24.10 
1984 05 99.99 -99.99  23.40 
1984 06 99.99 -99.99  23.60 
1984 07 99.99 -99.99  23.60 
1984 08 99.99 -99.99  24.70 
1984 09 99.99 -99.99  23.90 
1984 10 99.99 -99.99  22.70 
1984 11 99.99 -99.99  22.30 
1984 12 99.99 -99.99  23.50 
1985 02 99.99 -99.99  23.90 
1985 03 99.99 -99.99  24.90 
1985 04 99.99 -99.99  23.80 
1985 05 99.99 -99.99  23.70 
1985 07 99.99 -99.99  24.60 
1985 08 99.99 -99.99  25.20 
1985 10 99.99 -99.99  23.10 
1985 11 99.99 -99.99  23.30 
1985 12 99.99 -99.99  23.40 
1986 02 99.99 -99.99  23.10 
1986 03 99.99 -99.99  23.30 
1986 04 99.99 -99.99  23.80 
1986 05 99.99 -99.99  23.90 
1986 06 99.99 -99.99  24.00 
1986 07 99.99 -99.99  25.20 
1986 08 99.99 -99.99  25.70 
1986 10 99.99 -99.99  23.10 
1986 11 99.99 -99.99  23.70 
1986 12 99.99 -99.99  24.50 
1987 01 99.99 -99.99  25.10 
1987 02 99.99 -99.99  26.10 
1987 03 99.99 -99.99  25.00 
1987 04 99.99 -99.99  25.00 
1987 05 99.99 -99.99  24.50 
1987 06 99.99 -99.99  25.60 
1987 07 99.99 -99.99  25.60 
1987 08 99.99 -99.99  25.20 
1987 09 99.99 -99.99  25.40 
1987 10 99.99 -99.99  23.40 
1987 11 99.99 -99.99  24.20 
1987 12 99.99 -99.99  24.40 
1988 01 99.99 -99.99  23.80 
1988 02 99.99 -99.99  24.10 
1988 03 99.99 -99.99  25.30 
1988 04 99.99 -99.99  23.50 
1988 05 99.99 -99.99  23.60 
1988 07 99.99 -99.99  23.00 
1988 08 99.99 -99.99  23.20 
1988 09 99.99 -99.99  23.20 
1988 10 99.99 -99.99  22.90 
1988 11 99.99 -99.99  22.30 
1988 12 99.99 -99.99  22.20 
1989 01 99.99 -99.99  22.80 
1989 02 99.99 -99.99  22.40 
1989 03 99.99 -99.99  22.40 
1989 04 99.99 -99.99  23.30 
1989 05 99.99 -99.99  23.10 
1989 06 99.99 -99.99  23.30 
1989 07 99.99 -99.99  23.80 
1989 08 99.99 -99.99  24.20 
1989 09 99.99 -99.99  23.30 
1989 10 99.99 -99.99  23.00 
1989 11 99.99 -99.99  23.30 
1989 12 99.99 -99.99  23.20 
1990 01 99.99 -99.99  23.60 
1990 02 99.99 -99.99  23.10 
1990 03 99.99 -99.99  23.50 
1990 04 99.99 -99.99  23.20 
1990 05 99.99 -99.99  23.60 
1990 06 99.99 -99.99  24.30 
1990 07 99.99 -99.99  24.20 
1990 08 99.99 -99.99  25.50 
1990 09 99.99 -99.99  24.70 
1990 10 99.99 -99.99  22.50 
1990 11 99.99 -99.99  22.90 
1990 12 99.99 -99.99  22.80 
1996 02 25.80  20.80  23.30 
1996 03 31.80  19.00  25.40 
1996 04 25.40  18.20  21.80 
1996 05 26.00  20.00  23.00 
1996 06 25.50  19.00  22.25 
1996 07 25.70  21.80  23.75 
1996 08 30.60  17.60  24.10 
1996 09 31.20  14.30  22.75 
1996 10 26.60  19.40  23.00 
1996 11 28.60  21.00  24.80 
1996 12 24.50  14.30  19.40 
1997 01 26.30  18.40  22.34 
1997 02 26.50  19.60  23.05 
1997 03 27.40  19.40  23.40 
1997 04 25.90  18.60  22.25 
1997 05 26.10  21.30  23.70 
1997 06 25.60  22.00  23.80 
1997 07 27.30  22.40  24.84 
1997 08 29.00  24.40  26.70 
1997 09 27.70  21.50  24.60 
1997 10 27.00  22.40  24.70 
1997 11 25.90  20.60  23.25 
1997 12 25.80  21.60  23.70 
1998 01 27.60  23.00  25.30 
1998 03 27.00  22.40  24.70 
1998 04 26.20  22.00  24.10 
1998 05 28.30  21.60  24.95 
1998 06 26.00  22.60  24.30 
1998 07 26.20  19.29  22.75 
1998 08 26.80  20.40  23.59 
1998 09 26.20  21.10  23.65 
1998 10 26.50  21.10  23.80 
1998 11 24.20  21.20  22.70 
1998 12 23.60  19.40  21.50 
1999 01 23.70  20.20  21.95 
1999 02 24.60  20.70  22.65 
1999 03 25.60  21.50  23.55 
1999 04 25.60  20.80  23.20 
1999 05 24.70  20.10  22.40 
1999 06 24.60  20.20  22.40 
1999 07 25.60  20.90  23.25 
1999 08 27.00  22.50  24.75 
1999 09 25.00  19.20  22.10 
1999 10 23.60  19.40  21.50 
1999 11 24.00  20.90  22.45 
1999 12 28.80  21.20  25.00 
2000 01 24.70  20.40  22.55 
2000 02 24.70  20.60  22.65 
2000 03 24.90  19.20  22.05 
2000 04 24.80  20.90  22.84 
2000 05 24.90  21.00  22.95 
2000 06 25.20  21.00  23.10 
2000 07 25.50  22.40  23.95 
2000 08 27.00  23.00  25.00 
2000 09 24.70  20.60  22.65 
2000 10 26.40  21.30  23.84 
2000 11 24.10  20.90  22.50 
2000 12 24.90  20.80  22.84 
2001 01 25.30  20.90  23.09 
2001 02 26.70  21.40  24.05 
2001 03 25.40  21.10  23.25 
2001 04 25.40  21.40  23.40 
2001 05 25.40  21.70  23.55 
2001 06 27.70  22.20  24.95 
2001 07 27.20  21.50  24.35 
2001 08 27.70  23.60  25.65 
2001 09 25.80  19.10  22.45 
2001 10 26.20  21.30  23.75 
2001 11 24.10  18.40  21.25 
2001 12 24.80  21.40  23.09 
