1966 06 99.99 -99.99  25.30 
1966 07 99.99 -99.99  26.60 
1966 08 99.99 -99.99  27.20 
1966 09 99.99 -99.99  28.10 
1966 10 99.99 -99.99  27.20 
1966 11 99.99 -99.99  25.70 
1966 12 99.99 -99.99  20.60 
1967 01 99.99 -99.99  20.60 
1967 02 99.99 -99.99  23.10 
1967 03 99.99 -99.99  25.10 
1967 04 99.99 -99.99  27.60 
1967 05 99.99 -99.99  28.80 
1967 06 99.99 -99.99  28.60 
1967 07 99.99 -99.99  27.60 
1967 08 99.99 -99.99  27.40 
1967 09 99.99 -99.99  27.10 
1967 10 99.99 -99.99  27.20 
1967 11 99.99 -99.99  23.20 
1967 12 99.99 -99.99  21.20 
1968 01 99.99 -99.99  20.00 
1968 04 99.99 -99.99  27.30 
1968 05 99.99 -99.99  28.60 
1968 06 99.99 -99.99  27.10 
1968 07 99.99 -99.99  28.50 
1968 08 99.99 -99.99  28.20 
1968 09 99.99 -99.99  28.80 
1968 10 99.99 -99.99  28.10 
