1967 01 99.99 -99.99  27.40 
1967 02 99.99 -99.99  27.10 
1967 03 99.99 -99.99  27.80 
1967 04 99.99 -99.99  26.70 
1967 05 99.99 -99.99  26.70 
1967 06 99.99 -99.99  26.40 
1967 07 99.99 -99.99  26.00 
1967 08 99.99 -99.99  25.70 
1967 09 99.99 -99.99  27.20 
1967 10 99.99 -99.99  26.70 
1967 11 99.99 -99.99  26.80 
1967 12 99.99 -99.99  27.20 
1968 01 99.99 -99.99  27.30 
1968 02 99.99 -99.99  27.20 
1968 03 99.99 -99.99  27.30 
1968 04 99.99 -99.99  26.50 
1968 05 99.99 -99.99  27.20 
1968 06 99.99 -99.99  27.00 
1968 07 99.99 -99.99  26.70 
1968 08 99.99 -99.99  26.00 
1968 09 99.99 -99.99  26.50 
1968 10 99.99 -99.99  27.20 
1968 11 99.99 -99.99  27.30 
1968 12 99.99 -99.99  28.00 
1969 01 99.99 -99.99  27.70 
1969 02 99.99 -99.99  27.90 
1969 03 99.99 -99.99  28.60 
1969 04 99.99 -99.99  27.60 
1969 05 99.99 -99.99  26.90 
1969 06 99.99 -99.99  27.50 
1969 07 99.99 -99.99  26.40 
1969 08 99.99 -99.99  25.70 
1969 09 99.99 -99.99  26.40 
1969 10 99.99 -99.99  26.80 
1969 11 99.99 -99.99  27.70 
1969 12 99.99 -99.99  27.40 
1970 01 99.99 -99.99  28.10 
1970 02 99.99 -99.99  28.40 
1970 03 99.99 -99.99  27.60 
1970 04 99.99 -99.99  27.30 
1970 05 99.99 -99.99  28.50 
1970 06 99.99 -99.99  27.40 
1970 07 99.99 -99.99  26.90 
1970 08 99.99 -99.99  26.50 
1970 09 99.99 -99.99  26.00 
1970 10 99.99 -99.99  26.30 
1970 11 99.99 -99.99  26.80 
1970 12 99.99 -99.99  26.00 
1971 01 99.99 -99.99  26.50 
1971 02 99.99 -99.99  26.40 
1971 03 99.99 -99.99  26.60 
1971 04 99.99 -99.99  26.90 
1971 05 99.99 -99.99  26.60 
1971 06 99.99 -99.99  26.60 
1971 07 99.99 -99.99  26.90 
1971 08 99.99 -99.99  26.00 
1971 09 99.99 -99.99  26.20 
1971 10 99.99 -99.99  26.00 
1971 12 99.99 -99.99  26.60 
1974 02 99.99 -99.99  26.50 
1974 03 99.99 -99.99  26.70 
1974 04 99.99 -99.99  26.80 
1974 05 99.99 -99.99  25.90 
1974 10 99.99 -99.99  26.70 
1974 11 99.99 -99.99  26.70 
1974 12 99.99 -99.99  26.70 
1975 01 99.99 -99.99  27.20 
1975 02 99.99 -99.99  27.00 
1975 03 99.99 -99.99  27.00 
1975 04 99.99 -99.99  26.80 
1975 05 99.99 -99.99  26.30 
1975 06 99.99 -99.99  26.50 
1975 07 99.99 -99.99  26.50 
1975 08 99.99 -99.99  26.30 
1975 09 99.99 -99.99  26.40 
1976 12 99.99 -99.99  26.50 
1977 08 99.99 -99.99  23.70 
1977 09 99.99 -99.99  25.60 
1978 01 99.99 -99.99  27.00 
1978 02 99.99 -99.99  27.00 
1978 03 99.99 -99.99  26.60 
1978 04 99.99 -99.99  26.70 
1978 05 99.99 -99.99  26.70 
1978 06 99.99 -99.99  26.40 
1978 07 99.99 -99.99  26.00 
1978 08 99.99 -99.99  26.00 
1978 09 99.99 -99.99  26.40 
1978 10 99.99 -99.99  26.70 
1979 09 99.99 -99.99  26.60 
1979 10 99.99 -99.99  26.90 
1979 11 99.99 -99.99  27.00 
1979 12 99.99 -99.99  27.00 
1980 01 99.99 -99.99  26.90 
1980 03 99.99 -99.99  27.50 
1980 04 99.99 -99.99  27.40 
1980 06 99.99 -99.99  26.60 
1980 09 99.99 -99.99  26.50 
1980 11 99.99 -99.99  26.70 
1980 12 99.99 -99.99  27.30 
1981 01 99.99 -99.99  27.40 
1981 03 99.99 -99.99  27.10 
1981 04 99.99 -99.99  26.40 
1981 05 99.99 -99.99  26.80 
1981 06 99.99 -99.99  26.50 
1981 07 99.99 -99.99  26.10 
1981 09 99.99 -99.99  26.20 
1981 10 99.99 -99.99  26.10 
1981 11 99.99 -99.99  27.10 
1981 12 99.99 -99.99  27.00 
1982 01 99.99 -99.99  27.00 
1982 02 99.99 -99.99  27.00 
1982 03 99.99 -99.99  27.40 
1982 04 99.99 -99.99  27.10 
1982 05 99.99 -99.99  27.20 
1982 06 99.99 -99.99  26.90 
1982 07 99.99 -99.99  26.40 
1982 08 99.99 -99.99  26.00 
1982 09 99.99 -99.99  26.10 
1982 10 99.99 -99.99  26.70 
1982 11 99.99 -99.99  26.50 
1982 12 99.99 -99.99  26.70 
1983 01 99.99 -99.99  27.40 
1983 02 99.99 -99.99  27.70 
1983 03 99.99 -99.99  27.30 
1983 04 99.99 -99.99  27.00 
1983 05 99.99 -99.99  27.00 
1983 06 99.99 -99.99  26.30 
1983 07 99.99 -99.99  25.80 
1983 08 99.99 -99.99  25.90 
1983 09 99.99 -99.99  26.60 
1983 10 99.99 -99.99  26.60 
1983 11 99.99 -99.99  26.90 
1983 12 99.99 -99.99  26.70 
1984 01 99.99 -99.99  26.60 
1984 02 99.99 -99.99  27.10 
1984 03 99.99 -99.99  26.60 
1984 04 99.99 -99.99  27.40 
1984 05 99.99 -99.99  27.50 
1984 07 99.99 -99.99  26.00 
1984 08 99.99 -99.99  25.90 
1984 09 99.99 -99.99  26.30 
1984 10 99.99 -99.99  26.00 
1984 11 99.99 -99.99  26.70 
1984 12 99.99 -99.99  26.80 
1985 02 99.99 -99.99  27.40 
1985 03 99.99 -99.99  27.20 
1985 04 99.99 -99.99  26.90 
1985 05 99.99 -99.99  26.50 
1985 06 99.99 -99.99  26.40 
1985 08 99.99 -99.99  26.30 
1985 09 99.99 -99.99  26.10 
1985 10 99.99 -99.99  26.50 
1985 11 99.99 -99.99  27.00 
1985 12 99.99 -99.99  27.10 
1986 01 99.99 -99.99  27.10 
1986 02 99.99 -99.99  26.80 
1986 03 99.99 -99.99  27.30 
1986 04 99.99 -99.99  26.80 
1986 06 99.99 -99.99  26.60 
1986 07 99.99 -99.99  25.70 
1986 08 99.99 -99.99  25.50 
1986 09 99.99 -99.99  26.20 
1986 10 99.99 -99.99  26.60 
1986 11 99.99 -99.99  26.90 
1986 12 99.99 -99.99  27.40 
1987 01 99.99 -99.99  27.20 
1987 02 99.99 -99.99  27.90 
1987 03 99.99 -99.99  27.50 
1987 05 99.99 -99.99  26.30 
1987 06 99.99 -99.99  25.40 
1987 07 99.99 -99.99  25.50 
1987 08 99.99 -99.99  25.80 
1987 09 99.99 -99.99  26.10 
1987 10 99.99 -99.99  26.60 
1987 11 99.99 -99.99  27.30 
1987 12 99.99 -99.99  27.60 
1988 01 99.99 -99.99  27.70 
1988 02 99.99 -99.99  27.90 
1988 03 99.99 -99.99  28.10 
1988 04 99.99 -99.99  26.80 
1988 05 99.99 -99.99  27.40 
1988 06 99.99 -99.99  26.90 
1988 07 99.99 -99.99  26.40 
1988 08 99.99 -99.99  26.60 
1988 09 99.99 -99.99  26.60 
1988 10 99.99 -99.99  26.30 
1988 11 99.99 -99.99  26.00 
1988 12 99.99 -99.99  26.40 
1989 01 99.99 -99.99  26.70 
1989 02 99.99 -99.99  26.40 
1989 03 99.99 -99.99  26.90 
1989 04 99.99 -99.99  26.50 
1989 05 99.99 -99.99  26.90 
1989 06 99.99 -99.99  26.90 
1989 08 99.99 -99.99  26.20 
1989 09 99.99 -99.99  27.10 
1989 10 99.99 -99.99  26.90 
1989 11 99.99 -99.99  26.80 
1990 01 99.99 -99.99  27.30 
1990 02 99.99 -99.99  27.10 
1990 03 99.99 -99.99  27.20 
1990 04 99.99 -99.99  26.70 
1990 05 99.99 -99.99  27.60 
1990 06 99.99 -99.99  27.50 
1990 07 99.99 -99.99  26.40 
1990 08 99.99 -99.99  27.10 
1990 09 99.99 -99.99  27.30 
1990 10 99.99 -99.99  27.40 
1990 11 99.99 -99.99  27.40 
1990 12 99.99 -99.99  27.20 
