1960 01 99.99 -99.99  26.60 
1960 02 99.99 -99.99  26.70 
1960 03 99.99 -99.99  27.60 
1960 04 99.99 -99.99  28.80 
1960 05 99.99 -99.99  29.80 
1960 06 99.99 -99.99  29.40 
1960 07 99.99 -99.99  29.00 
1960 08 99.99 -99.99  29.90 
1960 09 99.99 -99.99  28.30 
1960 10 99.99 -99.99  27.40 
1960 11 99.99 -99.99  27.30 
1960 12 99.99 -99.99  26.10 
1961 01 99.99 -99.99  25.20 
1961 02 99.99 -99.99  26.20 
1961 03 99.99 -99.99  27.40 
1961 04 99.99 -99.99  28.80 
1961 05 99.99 -99.99  29.40 
1961 06 99.99 -99.99  29.20 
1961 07 99.99 -99.99  28.70 
1961 08 99.99 -99.99  28.90 
1961 09 99.99 -99.99  28.00 
1961 10 99.99 -99.99  27.40 
1961 11 99.99 -99.99  26.90 
1961 12 99.99 -99.99  26.30 
1962 01 99.99 -99.99  25.60 
1962 02 99.99 -99.99  25.50 
1962 03 99.99 -99.99  26.70 
1962 04 99.99 -99.99  28.30 
1962 05 99.99 -99.99  29.10 
1962 06 99.99 -99.99  28.60 
1962 07 99.99 -99.99  28.60 
1962 08 99.99 -99.99  28.10 
1962 09 99.99 -99.99  27.60 
1962 10 99.99 -99.99  27.50 
1962 11 99.99 -99.99  26.70 
1962 12 99.99 -99.99  25.90 
1963 01 99.99 -99.99  25.00 
1963 02 99.99 -99.99  24.90 
1963 03 99.99 -99.99  26.00 
1963 04 99.99 -99.99  27.00 
1963 05 99.99 -99.99  29.00 
1963 06 99.99 -99.99  29.80 
1963 07 99.99 -99.99  28.50 
1963 08 99.99 -99.99  27.50 
1963 09 99.99 -99.99  28.20 
1963 10 99.99 -99.99  26.60 
1963 11 99.99 -99.99  26.70 
1963 12 99.99 -99.99  26.10 
1964 01 99.99 -99.99  25.80 
1964 02 99.99 -99.99  25.30 
1964 03 99.99 -99.99  26.30 
1964 04 99.99 -99.99  28.10 
1964 05 99.99 -99.99  30.90 
1964 06 99.99 -99.99  29.50 
1964 07 99.99 -99.99  29.60 
1964 08 99.99 -99.99  30.10 
1964 09 99.99 -99.99  29.70 
1964 10 99.99 -99.99  29.00 
1964 11 99.99 -99.99  28.60 
1964 12 99.99 -99.99  28.00 
1965 01 99.99 -99.99  27.60 
1965 02 99.99 -99.99  28.00 
1965 03 99.99 -99.99  28.60 
1965 04 99.99 -99.99  29.50 
1965 05 99.99 -99.99  29.80 
1965 06 99.99 -99.99  29.70 
1965 07 99.99 -99.99  29.30 
1965 08 99.99 -99.99  29.40 
1965 09 99.99 -99.99  29.30 
1965 10 99.99 -99.99  29.40 
1965 11 99.99 -99.99  29.30 
1965 12 99.99 -99.99  29.30 
1966 01 99.99 -99.99  29.10 
1966 02 99.99 -99.99  28.90 
1966 03 99.99 -99.99  28.90 
1966 04 99.99 -99.99  29.30 
1966 05 99.99 -99.99  29.50 
1966 06 99.99 -99.99  29.50 
1966 07 99.99 -99.99  29.40 
1966 08 99.99 -99.99  29.70 
1966 09 99.99 -99.99  29.80 
1966 10 99.99 -99.99  29.70 
1966 11 99.99 -99.99  29.40 
1966 12 99.99 -99.99  29.30 
1967 01 99.99 -99.99  28.10 
1967 02 99.99 -99.99  28.00 
1967 03 99.99 -99.99  29.50 
1967 04 99.99 -99.99  31.20 
1967 05 99.99 -99.99  31.90 
1967 06 99.99 -99.99  32.59 
1967 07 99.99 -99.99  32.80 
1967 08 99.99 -99.99  28.90 
1967 09 99.99 -99.99  31.60 
1967 10 99.99 -99.99  31.70 
1967 11 99.99 -99.99  31.60 
1967 12 99.99 -99.99  31.30 
1968 01 99.99 -99.99  31.50 
1968 02 99.99 -99.99  31.40 
1968 03 99.99 -99.99  32.80 
1968 04 99.99 -99.99  33.09 
1968 05 99.99 -99.99  33.09 
1968 06 99.99 -99.99  33.00 
1968 07 99.99 -99.99  33.20 
1968 08 99.99 -99.99  33.50 
1968 09 99.99 -99.99  33.20 
1968 10 99.99 -99.99  33.00 
1968 11 99.99 -99.99  31.30 
1968 12 99.99 -99.99  31.80 
1969 01 99.99 -99.99  31.70 
1969 02 99.99 -99.99  32.59 
1969 03 99.99 -99.99  33.30 
1969 04 99.99 -99.99  33.40 
1969 05 99.99 -99.99  33.40 
1969 06 99.99 -99.99  32.80 
1969 07 99.99 -99.99  32.90 
1969 08 99.99 -99.99  33.40 
1969 09 99.99 -99.99  32.59 
1969 10 99.99 -99.99  32.50 
1969 11 99.99 -99.99  31.70 
1969 12 99.99 -99.99  30.90 
1970 01 99.99 -99.99  31.00 
1970 02 99.99 -99.99  31.50 
1970 03 99.99 -99.99  33.09 
1970 04 99.99 -99.99  33.50 
1970 05 99.99 -99.99  33.40 
1970 06 99.99 -99.99  30.20 
1970 07 99.99 -99.99  28.20 
1970 08 99.99 -99.99  28.60 
1970 09 99.99 -99.99  28.60 
1970 10 99.99 -99.99  28.20 
1970 11 99.99 -99.99  28.40 
1970 12 99.99 -99.99  28.70 
1971 01 99.99 -99.99  28.10 
1971 02 99.99 -99.99  27.80 
1971 03 99.99 -99.99  27.90 
1971 04 99.99 -99.99  28.80 
1971 05 99.99 -99.99  28.50 
1971 06 99.99 -99.99  28.10 
1971 07 99.99 -99.99  28.50 
1971 08 99.99 -99.99  30.00 
1971 09 99.99 -99.99  30.30 
1971 10 99.99 -99.99  29.80 
1971 11 99.99 -99.99  29.80 
1971 12 99.99 -99.99  30.20 
1972 01 99.99 -99.99  29.00 
1972 02 99.99 -99.99  30.10 
1972 03 99.99 -99.99  30.20 
1972 04 99.99 -99.99  31.50 
1972 05 99.99 -99.99  30.80 
1972 06 99.99 -99.99  30.30 
1972 07 99.99 -99.99  30.70 
1972 08 99.99 -99.99  30.00 
1972 09 99.99 -99.99  30.40 
1972 10 99.99 -99.99  30.50 
1972 11 99.99 -99.99  29.50 
1972 12 99.99 -99.99  30.30 
1973 01 99.99 -99.99  29.90 
1973 02 99.99 -99.99  29.40 
1973 03 99.99 -99.99  30.20 
1973 05 99.99 -99.99  31.80 
1973 06 99.99 -99.99  31.70 
1973 07 99.99 -99.99  30.30 
1973 08 99.99 -99.99  30.30 
1973 09 99.99 -99.99  30.10 
1973 10 99.99 -99.99  30.10 
1973 11 99.99 -99.99  30.10 
1973 12 99.99 -99.99  29.90 
1974 01 99.99 -99.99  30.00 
1974 02 99.99 -99.99  29.90 
1974 03 99.99 -99.99  30.00 
1974 04 99.99 -99.99  30.80 
1974 05 99.99 -99.99  31.30 
1974 06 99.99 -99.99  30.90 
1974 08 99.99 -99.99  30.80 
1974 09 99.99 -99.99  30.80 
1974 10 99.99 -99.99  29.90 
1974 11 99.99 -99.99  29.80 
1974 12 99.99 -99.99  29.20 
1975 01 99.99 -99.99  28.60 
1975 02 99.99 -99.99  29.60 
1975 03 99.99 -99.99  30.30 
1975 04 99.99 -99.99  30.40 
1975 05 99.99 -99.99  30.90 
1975 06 99.99 -99.99  31.40 
1975 07 99.99 -99.99  30.80 
1975 08 99.99 -99.99  30.70 
1975 09 99.99 -99.99  30.60 
1975 10 99.99 -99.99  30.30 
1975 11 99.99 -99.99  30.30 
1975 12 99.99 -99.99  29.90 
