1967 05 99.99 -99.99  10.00 
1967 06 99.99 -99.99   4.69 
1967 07 99.99 -99.99   4.69 
1967 08 99.99 -99.99   7.10 
1967 09 99.99 -99.99   8.60 
1967 10 99.99 -99.99  12.80 
1967 11 99.99 -99.99  15.40 
1967 12 99.99 -99.99  18.60 
1968 01 99.99 -99.99  20.00 
1968 02 99.99 -99.99  18.79 
1968 03 99.99 -99.99  14.80 
1968 04 99.99 -99.99   9.89 
1968 06 99.99 -99.99   7.30 
1968 07 99.99 -99.99   7.20 
1968 08 99.99 -99.99   9.10 
1968 09 99.99 -99.99  10.70 
1968 10 99.99 -99.99  12.30 
1968 11 99.99 -99.99  16.90 
1968 12 99.99 -99.99  18.10 
1969 01 99.99 -99.99  20.50 
1969 02 99.99 -99.99  18.40 
1969 03 99.99 -99.99  15.60 
1969 04 99.99 -99.99  12.40 
1969 05 99.99 -99.99   9.00 
1969 06 99.99 -99.99   9.80 
1969 07 99.99 -99.99   7.60 
1969 09 99.99 -99.99  14.60 
1969 10 99.99 -99.99  11.60 
1969 11 99.99 -99.99  19.70 
1969 12 99.99 -99.99  19.79 
1970 01 99.99 -99.99  19.20 
1970 02 99.99 -99.99  19.00 
1970 03 99.99 -99.99  17.20 
1970 04 99.99 -99.99  14.00 
1970 05 99.99 -99.99   8.60 
1970 06 99.99 -99.99   5.90 
1970 07 99.99 -99.99   6.60 
1970 08 99.99 -99.99   7.30 
1970 09 99.99 -99.99  10.00 
1970 10 99.99 -99.99  13.30 
1970 11 99.99 -99.99  16.10 
1970 12 99.99 -99.99  18.00 
1971 01 99.99 -99.99  18.00 
1971 02 99.99 -99.99  15.60 
1971 03 99.99 -99.99  14.60 
1971 04 99.99 -99.99  11.50 
1971 05 99.99 -99.99  10.00 
1971 06 99.99 -99.99   5.50 
1971 07 99.99 -99.99   8.80 
1971 08 99.99 -99.99   7.70 
1971 09 99.99 -99.99   9.89 
1971 10 99.99 -99.99  13.70 
1971 11 99.99 -99.99  17.20 
1971 12 99.99 -99.99  18.20 
1972 01 99.99 -99.99  20.80 
1972 02 99.99 -99.99  19.50 
1972 03 99.99 -99.99  15.80 
1972 04 99.99 -99.99  11.70 
1972 05 99.99 -99.99  11.00 
1972 06 99.99 -99.99   9.60 
1972 07 99.99 -99.99   5.30 
1972 08 99.99 -99.99   8.20 
1972 10 99.99 -99.99   8.80 
1972 12 99.99 -99.99  18.60 
1973 01 99.99 -99.99  18.40 
1973 02 99.99 -99.99  16.29 
1973 03 99.99 -99.99  14.30 
1973 04 99.99 -99.99  11.50 
1973 05 99.99 -99.99  10.90 
1973 06 99.99 -99.99   7.50 
1973 07 99.99 -99.99   7.10 
1973 08 99.99 -99.99   7.10 
1973 09 99.99 -99.99   8.70 
1973 10 99.99 -99.99  11.60 
1973 11 99.99 -99.99  15.40 
1973 12 99.99 -99.99  17.90 
1974 01 99.99 -99.99  17.90 
1974 02 99.99 -99.99  17.29 
1974 03 99.99 -99.99  13.40 
1974 04 99.99 -99.99  11.10 
1974 05 99.99 -99.99  10.50 
1974 06 99.99 -99.99   7.10 
1974 07 99.99 -99.99   6.20 
1974 09 99.99 -99.99   9.80 
1974 10 99.99 -99.99  13.60 
1974 11 99.99 -99.99  15.60 
1974 12 99.99 -99.99  17.20 
1975 01 99.99 -99.99  20.80 
1975 02 99.99 -99.99  18.00 
