1961 06 99.99 -99.99  33.40 
1961 08 99.99 -99.99  28.90 
1961 09 99.99 -99.99  22.90 
1961 10 99.99 -99.99  28.80 
1961 11 99.99 -99.99  23.80 
1961 12 99.99 -99.99  20.40 
1962 02 99.99 -99.99  22.30 
1962 03 99.99 -99.99  29.70 
1962 04 99.99 -99.99  30.60 
1962 05 99.99 -99.99  32.09 
1962 06 99.99 -99.99  33.30 
1962 07 99.99 -99.99  30.80 
1962 09 99.99 -99.99  30.70 
1962 10 99.99 -99.99  31.00 
1962 11 99.99 -99.99  28.80 
1962 12 99.99 -99.99  29.80 
1963 01 99.99 -99.99  23.70 
1963 02 99.99 -99.99  26.30 
1963 03 99.99 -99.99  26.90 
1963 06 99.99 -99.99  33.70 
1963 08 99.99 -99.99  32.90 
1963 09 99.99 -99.99  33.00 
1963 11 99.99 -99.99  26.50 
1963 12 99.99 -99.99  23.90 
1964 01 99.99 -99.99  23.00 
1964 02 99.99 -99.99  24.00 
1964 03 99.99 -99.99  31.30 
1964 04 99.99 -99.99  33.50 
1964 05 99.99 -99.99  35.20 
1964 06 99.99 -99.99  35.90 
1964 07 99.99 -99.99  33.40 
1964 08 99.99 -99.99  30.80 
1964 10 99.99 -99.99  29.20 
1964 11 99.99 -99.99  26.60 
1964 12 99.99 -99.99  20.29 
1965 01 99.99 -99.99  22.60 
1965 02 99.99 -99.99  24.60 
1965 03 99.99 -99.99  25.70 
1965 04 99.99 -99.99  28.00 
1965 05 99.99 -99.99  28.70 
1965 06 99.99 -99.99  32.30 
1965 08 99.99 -99.99  31.50 
1965 09 99.99 -99.99  30.40 
1965 10 99.99 -99.99  29.90 
1965 11 99.99 -99.99  24.80 
1965 12 99.99 -99.99  21.10 
1966 01 99.99 -99.99  20.80 
1966 02 99.99 -99.99  24.00 
1966 03 99.99 -99.99  27.00 
1966 04 99.99 -99.99  29.00 
1966 06 99.99 -99.99  31.00 
1966 07 99.99 -99.99  30.70 
1966 08 99.99 -99.99  30.20 
1966 09 99.99 -99.99  34.50 
1966 10 99.99 -99.99  30.70 
1967 02 99.99 -99.99  22.20 
1967 04 99.99 -99.99  32.00 
1967 05 99.99 -99.99  32.09 
1967 06 99.99 -99.99  32.20 
1967 07 99.99 -99.99  29.50 
1967 08 99.99 -99.99  30.30 
1967 09 99.99 -99.99  30.30 
1967 10 99.99 -99.99  28.80 
1967 11 99.99 -99.99  26.40 
1967 12 99.99 -99.99  24.40 
1968 01 99.99 -99.99  22.00 
1968 02 99.99 -99.99  22.60 
1968 03 99.99 -99.99  27.30 
1968 04 99.99 -99.99  30.20 
1968 05 99.99 -99.99  32.20 
1968 06 99.99 -99.99  32.70 
1968 08 99.99 -99.99  32.00 
1968 09 99.99 -99.99  31.90 
1968 10 99.99 -99.99  30.90 
1968 11 99.99 -99.99  28.50 
