1961 01 99.99 -99.99  18.60 
1961 02 99.99 -99.99  18.00 
1961 03 99.99 -99.99  24.40 
1961 04 99.99 -99.99  27.90 
1961 05 99.99 -99.99  27.80 
1961 06 99.99 -99.99  28.20 
1961 07 99.99 -99.99  29.30 
1961 08 99.99 -99.99  29.30 
1961 09 99.99 -99.99  28.90 
1961 10 99.99 -99.99  26.60 
1961 11 99.99 -99.99  21.70 
1961 12 99.99 -99.99  16.79 
1962 01 99.99 -99.99  16.40 
1962 02 99.99 -99.99  20.20 
1962 03 99.99 -99.99  23.90 
1962 04 99.99 -99.99  29.20 
1962 05 99.99 -99.99  26.90 
1962 06 99.99 -99.99  28.20 
1962 07 99.99 -99.99  29.20 
1962 08 99.99 -99.99  28.70 
1962 09 99.99 -99.99  29.30 
1962 10 99.99 -99.99  26.60 
1962 11 99.99 -99.99  22.20 
1962 12 99.99 -99.99  18.60 
1963 01 99.99 -99.99  17.29 
1963 02 99.99 -99.99  20.90 
1963 03 99.99 -99.99  23.40 
1963 04 99.99 -99.99  26.80 
1963 05 99.99 -99.99  26.60 
1963 06 99.99 -99.99  28.70 
1963 07 99.99 -99.99  28.70 
1963 08 99.99 -99.99  29.00 
1963 09 99.99 -99.99  29.60 
1963 10 99.99 -99.99  26.80 
1963 11 99.99 -99.99  21.80 
1963 12 99.99 -99.99  22.30 
1964 01 99.99 -99.99  16.29 
1964 02 99.99 -99.99  19.90 
1964 03 99.99 -99.99  25.70 
1964 04 99.99 -99.99  26.90 
1964 05 99.99 -99.99  27.10 
1964 06 99.99 -99.99  28.20 
1964 07 99.99 -99.99  28.10 
1964 08 99.99 -99.99  29.10 
1964 09 99.99 -99.99  28.70 
1964 10 99.99 -99.99  27.50 
1964 11 99.99 -99.99  23.20 
1964 12 99.99 -99.99  18.10 
1965 01 99.99 -99.99  17.60 
1965 02 99.99 -99.99  19.20 
1965 03 99.99 -99.99  22.40 
1965 04 99.99 -99.99  26.10 
1965 05 99.99 -99.99  27.80 
1965 06 99.99 -99.99  28.30 
1965 07 99.99 -99.99  28.40 
1965 08 99.99 -99.99  28.40 
1965 09 99.99 -99.99  28.30 
1965 10 99.99 -99.99  26.60 
1965 11 99.99 -99.99  21.60 
1965 12 99.99 -99.99  18.20 
1966 01 99.99 -99.99  17.50 
1966 02 99.99 -99.99  21.40 
1966 03 99.99 -99.99  25.20 
1966 04 99.99 -99.99  29.70 
1966 05 99.99 -99.99  29.30 
1966 06 99.99 -99.99  28.10 
1966 07 99.99 -99.99  28.70 
1966 08 99.99 -99.99  28.80 
1966 09 99.99 -99.99  28.40 
1966 10 99.99 -99.99  25.40 
1966 11 99.99 -99.99  21.90 
1966 12 99.99 -99.99  18.50 
1967 01 99.99 -99.99  17.29 
1967 02 99.99 -99.99  19.79 
1967 03 99.99 -99.99  22.30 
1967 04 99.99 -99.99  24.80 
1967 05 99.99 -99.99  27.40 
1967 06 99.99 -99.99  29.30 
1967 07 99.99 -99.99  28.90 
1967 08 99.99 -99.99  30.90 
1967 09 99.99 -99.99  29.20 
1967 10 99.99 -99.99  26.30 
1967 11 99.99 -99.99  23.00 
1967 12 99.99 -99.99  19.70 
1968 01 99.99 -99.99  16.10 
1968 02 99.99 -99.99  16.20 
1968 03 99.99 -99.99  21.20 
1968 10 99.99 -99.99  26.10 
1968 11 99.99 -99.99  22.80 
1968 12 99.99 -99.99  18.40 
1969 02 99.99 -99.99  19.10 
1969 03 99.99 -99.99  22.20 
1969 05 99.99 -99.99  27.50 
1969 07 99.99 -99.99  29.60 
1969 08 99.99 -99.99  29.50 
1969 09 99.99 -99.99  28.90 
1969 10 99.99 -99.99  26.20 
1969 11 99.99 -99.99  22.40 
1969 12 99.99 -99.99  18.79 
1970 01 99.99 -99.99  16.90 
1970 02 99.99 -99.99  19.29 
1970 03 99.99 -99.99  23.80 
1970 06 99.99 -99.99  27.70 
1970 07 99.99 -99.99  28.30 
1970 08 99.99 -99.99  28.90 
1970 09 99.99 -99.99  29.00 
1970 10 99.99 -99.99  26.50 
1970 11 99.99 -99.99  23.40 
1970 12 99.99 -99.99  17.90 
2000 01 23.50  11.10  17.29 
2000 03 29.30  16.70  23.00 
2000 04 31.00  21.40  26.20 
2000 05 31.20  23.60  27.40 
2000 06 32.09  25.60  28.84 
2000 07 32.30  26.20  29.25 
2000 08 32.40  26.20  29.30 
2000 09 30.90  24.90  27.90 
2000 10 31.60  23.00  27.30 
