1951 01 99.99 -99.99  12.50 
1951 02 99.99 -99.99  12.40 
1951 03 99.99 -99.99  14.20 
1951 04 99.99 -99.99  16.10 
1951 05 99.99 -99.99  16.50 
1951 06 99.99 -99.99  17.40 
1951 07 99.99 -99.99  16.70 
1951 08 99.99 -99.99  16.60 
1951 09 99.99 -99.99  16.10 
1951 10 99.99 -99.99  15.50 
1951 11 99.99 -99.99  14.00 
1951 12 99.99 -99.99  13.80 
1952 01 99.99 -99.99  13.50 
1952 02 99.99 -99.99  13.60 
1952 03 99.99 -99.99  14.50 
1952 04 99.99 -99.99  15.60 
1952 05 99.99 -99.99  15.70 
1952 06 99.99 -99.99  16.10 
1952 07 99.99 -99.99  17.00 
1952 08 99.99 -99.99  16.70 
1952 09 99.99 -99.99  16.29 
1952 10 99.99 -99.99  14.80 
1952 11 99.99 -99.99  13.70 
1952 12 99.99 -99.99  13.80 
1953 01 99.99 -99.99  13.10 
1953 02 99.99 -99.99  14.80 
1953 03 99.99 -99.99  15.60 
1953 04 99.99 -99.99  15.70 
1953 05 99.99 -99.99  16.10 
1953 06 99.99 -99.99  16.60 
1953 07 99.99 -99.99  16.20 
1953 08 99.99 -99.99  15.40 
1953 09 99.99 -99.99  14.70 
1953 10 99.99 -99.99  14.50 
1953 11 99.99 -99.99  13.60 
1953 12 99.99 -99.99  13.00 
1954 01 99.99 -99.99  12.60 
1954 02 99.99 -99.99  12.60 
1954 03 99.99 -99.99  14.10 
1954 04 99.99 -99.99  15.10 
1954 05 99.99 -99.99  15.80 
1954 06 99.99 -99.99  15.70 
1954 07 99.99 -99.99  16.10 
1954 08 99.99 -99.99  15.80 
1954 09 99.99 -99.99  14.60 
1954 10 99.99 -99.99  14.20 
1954 11 99.99 -99.99  13.20 
1954 12 99.99 -99.99  10.90 
1955 01 99.99 -99.99  11.70 
1955 02 99.99 -99.99  11.50 
1955 03 99.99 -99.99  13.80 
1955 04 99.99 -99.99  16.50 
1955 05 99.99 -99.99  15.80 
1955 06 99.99 -99.99  16.29 
1955 07 99.99 -99.99  15.30 
1955 08 99.99 -99.99  16.10 
1955 09 99.99 -99.99  16.10 
1955 10 99.99 -99.99  14.70 
1955 11 99.99 -99.99  13.20 
1955 12 99.99 -99.99  11.60 
1956 01 99.99 -99.99  10.40 
1956 02 99.99 -99.99  12.90 
1956 03 99.99 -99.99  13.60 
1956 04 99.99 -99.99  15.20 
1956 05 99.99 -99.99  15.00 
1956 06 99.99 -99.99  15.10 
1956 07 99.99 -99.99  15.20 
1956 08 99.99 -99.99  15.50 
1956 09 99.99 -99.99  15.00 
1956 10 99.99 -99.99  12.30 
1956 11 99.99 -99.99  12.50 
1956 12 99.99 -99.99  13.00 
1957 01 99.99 -99.99  11.50 
1957 02 99.99 -99.99  12.60 
1957 03 99.99 -99.99  13.10 
1957 04 99.99 -99.99  15.00 
1957 05 99.99 -99.99  15.30 
1957 06 99.99 -99.99  15.50 
1957 07 99.99 -99.99  16.70 
1957 08 99.99 -99.99  16.29 
1957 09 99.99 -99.99  15.70 
1957 10 99.99 -99.99  14.70 
1957 11 99.99 -99.99  14.30 
1958 06 99.99 -99.99  16.79 
1958 07 99.99 -99.99  16.00 
1958 08 99.99 -99.99  15.80 
1958 09 99.99 -99.99  15.60 
1958 10 99.99 -99.99  15.90 
1958 11 99.99 -99.99  14.60 
1958 12 99.99 -99.99  12.20 
1959 01 99.99 -99.99  14.00 
1959 02 99.99 -99.99  12.40 
1959 03 99.99 -99.99  14.30 
1959 04 99.99 -99.99  14.10 
1959 05 99.99 -99.99  15.30 
1960 10 99.99 -99.99  15.40 
1960 11 99.99 -99.99  13.80 
1960 12 99.99 -99.99  12.20 
1961 01 99.99 -99.99  10.60 
1961 02 99.99 -99.99  12.30 
1961 03 99.99 -99.99  14.10 
1961 04 99.99 -99.99  15.70 
1961 05 99.99 -99.99  15.60 
1961 06 99.99 -99.99  15.70 
1961 07 99.99 -99.99  15.70 
1961 08 99.99 -99.99  15.40 
1961 09 99.99 -99.99  14.90 
1961 10 99.99 -99.99  14.30 
1961 11 99.99 -99.99  13.80 
1961 12 99.99 -99.99  12.00 
1962 01 99.99 -99.99  11.80 
1962 02 99.99 -99.99  12.90 
1962 03 99.99 -99.99  14.10 
1962 04 99.99 -99.99  14.50 
1962 05 99.99 -99.99  14.50 
1962 06 99.99 -99.99  15.40 
1962 07 99.99 -99.99  16.10 
1962 08 99.99 -99.99  16.70 
1962 09 99.99 -99.99  15.80 
1962 10 99.99 -99.99  14.80 
1962 11 99.99 -99.99  11.40 
1962 12 99.99 -99.99  11.40 
1963 01 99.99 -99.99  11.20 
1963 02 99.99 -99.99  12.10 
1963 03 99.99 -99.99  13.50 
1963 04 99.99 -99.99  14.50 
1963 05 99.99 -99.99  15.00 
1963 06 99.99 -99.99  15.30 
1963 07 99.99 -99.99  15.30 
1963 08 99.99 -99.99  15.80 
1963 09 99.99 -99.99  15.10 
1963 10 99.99 -99.99  13.90 
1963 11 99.99 -99.99  13.40 
1963 12 99.99 -99.99  10.80 
1964 01 99.99 -99.99  12.30 
1964 02 99.99 -99.99  13.00 
1964 03 99.99 -99.99  15.40 
1964 04 99.99 -99.99  15.70 
1964 05 99.99 -99.99  15.70 
1964 06 99.99 -99.99  15.50 
1964 07 99.99 -99.99  15.40 
1964 08 99.99 -99.99  15.40 
1964 09 99.99 -99.99  14.80 
1964 10 99.99 -99.99  12.40 
1964 11 99.99 -99.99  12.80 
1964 12 99.99 -99.99  11.70 
1965 01 99.99 -99.99  11.20 
1965 02 99.99 -99.99  12.20 
1965 03 99.99 -99.99  13.00 
1965 04 99.99 -99.99  14.60 
1965 05 99.99 -99.99  15.20 
1965 06 99.99 -99.99  15.60 
1965 07 99.99 -99.99  16.10 
1965 08 99.99 -99.99  15.30 
1965 09 99.99 -99.99  15.20 
1965 10 99.99 -99.99  14.10 
1965 11 99.99 -99.99  13.90 
1965 12 99.99 -99.99  12.80 
1966 01 99.99 -99.99  11.50 
1966 02 99.99 -99.99  13.30 
1966 03 99.99 -99.99  13.60 
1966 04 99.99 -99.99  15.90 
1966 05 99.99 -99.99  14.80 
1966 06 99.99 -99.99  15.50 
1966 07 99.99 -99.99  15.00 
1966 08 99.99 -99.99  15.40 
1966 09 99.99 -99.99  15.20 
1966 10 99.99 -99.99  13.70 
1966 11 99.99 -99.99  12.10 
1966 12 99.99 -99.99  11.30 
1967 01 99.99 -99.99  11.50 
1967 02 99.99 -99.99  12.80 
1967 03 99.99 -99.99  13.50 
1967 04 99.99 -99.99  14.00 
1967 05 99.99 -99.99  15.50 
1967 06 99.99 -99.99  15.00 
1967 07 99.99 -99.99  15.00 
1967 08 99.99 -99.99  15.00 
1967 09 99.99 -99.99  15.20 
1967 10 99.99 -99.99  14.10 
1967 11 99.99 -99.99  12.30 
1967 12 99.99 -99.99  12.70 
1968 01 99.99 -99.99  12.30 
1968 02 99.99 -99.99  10.70 
1968 03 99.99 -99.99  12.20 
1968 11 99.99 -99.99  12.00 
1969 07 99.99 -99.99  15.20 
1969 09 99.99 -99.99  20.00 
1969 10 99.99 -99.99  13.80 
1969 11 99.99 -99.99  12.00 
1969 12 99.99 -99.99  11.30 
1970 01 99.99 -99.99  11.90 
1970 02 99.99 -99.99  12.00 
1970 03 99.99 -99.99  12.70 
1970 04 99.99 -99.99  14.50 
1970 05 99.99 -99.99  13.70 
1970 06 99.99 -99.99  13.00 
1970 07 99.99 -99.99  13.60 
1970 08 99.99 -99.99  11.90 
1970 09 99.99 -99.99  12.70 
1970 10 99.99 -99.99  15.10 
1970 11 99.99 -99.99  12.90 
1970 12 99.99 -99.99  12.30 
1971 04 99.99 -99.99  13.60 
1971 05 99.99 -99.99  15.30 
1971 07 99.99 -99.99  14.80 
1971 09 99.99 -99.99  27.80 
1971 10 99.99 -99.99  23.40 
1972 02 99.99 -99.99  12.60 
1972 08 99.99 -99.99  15.30 
1973 07 99.99 -99.99  15.40 
1973 10 99.99 -99.99  15.20 
1973 12 99.99 -99.99  15.00 
1974 03 99.99 -99.99  13.80 
1974 05 99.99 -99.99  15.40 
1974 09 99.99 -99.99  15.00 
1975 05 99.99 -99.99  16.20 
1975 06 99.99 -99.99  15.70 
1975 07 99.99 -99.99  17.10 
1976 03 99.99 -99.99  13.30 
1976 04 99.99 -99.99  14.80 
1976 05 99.99 -99.99  15.10 
1976 07 99.99 -99.99  15.00 
1977 07 99.99 -99.99  16.29 
1977 08 99.99 -99.99  15.90 
1977 09 99.99 -99.99  15.80 
1977 12 99.99 -99.99  13.40 
1978 01 99.99 -99.99  12.40 
1978 02 99.99 -99.99  12.70 
1978 03 99.99 -99.99  14.30 
1978 04 99.99 -99.99  16.20 
1978 07 99.99 -99.99  15.80 
1978 08 99.99 -99.99  15.90 
1978 10 99.99 -99.99  14.50 
1979 08 99.99 -99.99  15.80 
1979 10 99.99 -99.99  15.30 
1980 02 99.99 -99.99  13.10 
1980 03 99.99 -99.99  15.50 
1980 04 99.99 -99.99  27.90 
1980 05 99.99 -99.99  17.20 
1980 06 99.99 -99.99  16.60 
1980 07 99.99 -99.99  16.70 
1980 08 99.99 -99.99  16.00 
1980 09 99.99 -99.99  16.00 
1980 10 99.99 -99.99  14.90 
1980 11 99.99 -99.99  13.30 
1980 12 99.99 -99.99  11.20 
1981 02 99.99 -99.99  12.80 
1981 03 99.99 -99.99  15.20 
1981 04 99.99 -99.99  15.50 
1981 05 99.99 -99.99  16.40 
1981 12 99.99 -99.99  14.40 
1982 02 99.99 -99.99  13.60 
1982 05 99.99 -99.99  16.79 
1982 10 99.99 -99.99  14.00 
1982 12 99.99 -99.99  12.50 
1983 02 99.99 -99.99  12.20 
1983 03 99.99 -99.99  13.00 
1983 04 99.99 -99.99  15.60 
1983 05 99.99 -99.99  17.00 
1983 06 99.99 -99.99  16.70 
1984 02 99.99 -99.99  27.10 
1984 03 99.99 -99.99  14.20 
1984 05 99.99 -99.99  15.20 
1984 06 99.99 -99.99  15.80 
1984 07 99.99 -99.99  15.90 
1984 11 99.99 -99.99  11.30 
1985 01 99.99 -99.99  11.40 
1985 02 99.99 -99.99  12.70 
1985 07 99.99 -99.99  15.40 
1986 07 99.99 -99.99  16.20 
1987 01 99.99 -99.99  10.90 
1987 02 99.99 -99.99  13.80 
1987 03 99.99 -99.99  15.70 
1987 06 99.99 -99.99  17.60 
1987 08 99.99 -99.99  17.50 
1987 09 99.99 -99.99  17.00 
1987 10 99.99 -99.99  14.00 
1987 11 99.99 -99.99  14.30 
1987 12 99.99 -99.99  13.20 
1988 01 99.99 -99.99  12.70 
1988 02 99.99 -99.99  13.70 
1988 04 99.99 -99.99  17.79 
1988 05 99.99 -99.99  17.60 
1988 08 99.99 -99.99  16.10 
1988 10 99.99 -99.99  14.30 
1988 11 99.99 -99.99  13.40 
1988 12 99.99 -99.99  13.40 
1989 05 99.99 -99.99  15.60 
1990 10 99.99 -99.99  14.90 
