1961 01 99.99 -99.99  12.30 
1961 02 99.99 -99.99  14.10 
1961 03 99.99 -99.99  17.60 
1961 04 99.99 -99.99  24.10 
1961 05 99.99 -99.99  30.90 
1961 10 99.99 -99.99  26.30 
1961 11 99.99 -99.99  18.50 
1961 12 99.99 -99.99  14.30 
1962 01 99.99 -99.99  13.10 
1962 02 99.99 -99.99  15.50 
1962 03 99.99 -99.99  20.90 
1962 04 99.99 -99.99  24.40 
1962 05 99.99 -99.99  31.60 
1962 06 99.99 -99.99  35.90 
1962 07 99.99 -99.99  37.30 
1962 08 99.99 -99.99  36.90 
1962 09 99.99 -99.99  32.70 
1962 10 99.99 -99.99  29.00 
1962 11 99.99 -99.99  20.10 
1962 12 99.99 -99.99  15.70 
1963 01 99.99 -99.99  14.70 
1963 02 99.99 -99.99  17.90 
1963 03 99.99 -99.99  17.90 
1963 04 99.99 -99.99  25.50 
1963 05 99.99 -99.99  27.50 
1963 06 99.99 -99.99  35.30 
1963 07 99.99 -99.99  37.30 
1963 08 99.99 -99.99  37.59 
1963 09 99.99 -99.99  33.20 
1963 10 99.99 -99.99  28.50 
1963 11 99.99 -99.99  18.50 
1963 12 99.99 -99.99  11.90 
1964 01 99.99 -99.99   7.10 
1964 02 99.99 -99.99  14.50 
1964 03 99.99 -99.99  20.60 
1964 04 99.99 -99.99  23.90 
1964 05 99.99 -99.99  31.10 
1964 06 99.99 -99.99  36.30 
1964 07 99.99 -99.99  37.30 
1964 08 99.99 -99.99  36.09 
1964 09 99.99 -99.99  32.59 
1964 10 99.99 -99.99  25.10 
1964 11 99.99 -99.99  19.60 
1964 12 99.99 -99.99  12.50 
1965 01 99.99 -99.99  11.90 
1965 02 99.99 -99.99  14.70 
1965 03 99.99 -99.99  20.10 
1965 04 99.99 -99.99  23.10 
1965 05 99.99 -99.99  31.80 
1965 06 99.99 -99.99  36.00 
1965 07 99.99 -99.99  37.50 
1965 08 99.99 -99.99  37.90 
1965 09 99.99 -99.99  33.90 
1965 10 99.99 -99.99  27.90 
1965 11 99.99 -99.99  20.20 
1965 12 99.99 -99.99  14.20 
1966 01 99.99 -99.99  16.29 
1966 02 99.99 -99.99  14.80 
1966 03 99.99 -99.99  20.10 
1967 01 99.99 -99.99  12.90 
1967 02 99.99 -99.99  11.70 
1967 03 99.99 -99.99  17.10 
1967 04 99.99 -99.99  21.90 
1967 05 99.99 -99.99  28.90 
1967 06 99.99 -99.99  32.30 
1967 07 99.99 -99.99  35.30 
1967 08 99.99 -99.99  33.90 
1967 09 99.99 -99.99  31.90 
1967 10 99.99 -99.99  26.60 
1967 11 99.99 -99.99  18.90 
1967 12 99.99 -99.99  11.90 
1968 01 99.99 -99.99  10.50 
1968 02 99.99 -99.99  12.00 
1968 03 99.99 -99.99  18.90 
1968 04 99.99 -99.99  23.20 
1968 05 99.99 -99.99  30.70 
1968 06 99.99 -99.99  34.30 
1968 07 99.99 -99.99  37.90 
1968 08 99.99 -99.99  36.09 
1968 09 99.99 -99.99  32.59 
1968 10 99.99 -99.99  27.60 
1968 11 99.99 -99.99  23.60 
1968 12 99.99 -99.99  16.90 
1969 01 99.99 -99.99  14.40 
1969 02 99.99 -99.99  15.50 
1969 03 99.99 -99.99  22.70 
1969 04 99.99 -99.99  23.90 
1969 05 99.99 -99.99  31.30 
1969 06 99.99 -99.99  34.90 
1969 07 99.99 -99.99  35.09 
1969 08 99.99 -99.99  35.50 
1969 11 99.99 -99.99  18.10 
1969 12 99.99 -99.99  16.29 
