1977 01 99.99 -99.99 -13.90 
1977 02 99.99 -99.99 -16.10 
1977 03 99.99 -99.99  -2.90 
1977 04 99.99 -99.99   5.30 
1977 05 99.99 -99.99   8.39 
1977 06 99.99 -99.99  13.90 
1977 08 99.99 -99.99  14.60 
1977 09 99.99 -99.99   9.89 
1977 10 99.99 -99.99   5.90 
1978 01 99.99 -99.99 -18.60 
1978 02 99.99 -99.99 -12.00 
1978 03 99.99 -99.99  -8.80 
1978 04 99.99 -99.99   2.90 
1978 05 99.99 -99.99  10.60 
1978 06 99.99 -99.99   9.50 
1978 07 99.99 -99.99  16.79 
1978 08 99.99 -99.99  16.10 
1978 09 99.99 -99.99  10.30 
1978 10 99.99 -99.99   3.80 
1978 11 99.99 -99.99  -3.10 
1978 12 99.99 -99.99  -5.50 
1979 01 99.99 -99.99 -13.40 
1979 02 99.99 -99.99 -14.90 
1979 03 99.99 -99.99 -11.70 
