1961 01 99.99 -99.99  25.90 
1961 02 99.99 -99.99  25.70 
1961 03 99.99 -99.99  27.00 
1961 04 99.99 -99.99  24.40 
1961 06 99.99 -99.99  27.40 
1961 07 99.99 -99.99  28.00 
1961 08 99.99 -99.99  28.40 
1961 09 99.99 -99.99  27.60 
1961 10 99.99 -99.99  26.70 
1961 11 99.99 -99.99  26.40 
1961 12 99.99 -99.99  25.50 
1962 01 99.99 -99.99  25.40 
1962 02 99.99 -99.99  25.20 
1962 03 99.99 -99.99  25.20 
1962 04 99.99 -99.99  26.00 
1962 05 99.99 -99.99  26.20 
1962 06 99.99 -99.99  27.30 
1962 07 99.99 -99.99  28.40 
1962 08 99.99 -99.99  28.10 
1962 09 99.99 -99.99  27.20 
1962 10 99.99 -99.99  26.90 
1962 11 99.99 -99.99  26.40 
1962 12 99.99 -99.99  26.20 
1963 01 99.99 -99.99  26.00 
1964 06 99.99 -99.99  26.80 
1966 08 99.99 -99.99  26.40 
1966 10 99.99 -99.99  25.40 
