1960 06 99.99 -99.99  26.40 
1961 07 99.99 -99.99  25.90 
1962 12 99.99 -99.99  26.70 
1963 01 99.99 -99.99  26.80 
1963 02 99.99 -99.99  26.90 
1963 03 99.99 -99.99  26.70 
1963 04 99.99 -99.99  26.80 
1963 05 99.99 -99.99  26.80 
1963 06 99.99 -99.99  26.30 
1963 07 99.99 -99.99  25.90 
1963 08 99.99 -99.99  26.30 
1963 09 99.99 -99.99  26.10 
1963 10 99.99 -99.99  26.60 
1963 11 99.99 -99.99  26.70 
1963 12 99.99 -99.99  26.70 
1964 01 99.99 -99.99  27.00 
1964 02 99.99 -99.99  26.80 
1964 03 99.99 -99.99  26.70 
1964 04 99.99 -99.99  27.10 
1964 05 99.99 -99.99  26.90 
1964 06 99.99 -99.99  26.10 
1964 07 99.99 -99.99  26.40 
1964 08 99.99 -99.99  26.20 
1964 09 99.99 -99.99  26.60 
1964 10 99.99 -99.99  26.30 
1964 11 99.99 -99.99  26.60 
1964 12 99.99 -99.99  26.00 
1965 01 99.99 -99.99  26.20 
1965 02 99.99 -99.99  26.20 
1965 03 99.99 -99.99  26.20 
1965 04 99.99 -99.99  27.10 
1965 05 99.99 -99.99  26.90 
1965 06 99.99 -99.99  26.00 
1965 07 99.99 -99.99  25.70 
1965 08 99.99 -99.99  26.10 
1965 09 99.99 -99.99  26.20 
1965 11 99.99 -99.99  26.30 
1965 12 99.99 -99.99  26.40 
1966 01 99.99 -99.99  26.30 
1966 02 99.99 -99.99  26.60 
1966 03 99.99 -99.99  26.60 
1966 04 99.99 -99.99  26.80 
1966 06 99.99 -99.99  26.20 
1966 07 99.99 -99.99  26.10 
1966 09 99.99 -99.99  26.50 
1967 01 99.99 -99.99  26.20 
1967 02 99.99 -99.99  26.20 
1967 03 99.99 -99.99  26.90 
1967 04 99.99 -99.99  26.80 
1967 06 99.99 -99.99  26.30 
1967 07 99.99 -99.99  26.50 
1967 08 99.99 -99.99  26.50 
1967 10 99.99 -99.99  26.70 
