1970 02 99.99 -99.99 -15.00 
1970 03 99.99 -99.99 -10.60 
1970 04 99.99 -99.99  -3.30 
1970 05 99.99 -99.99   5.10 
1970 06 99.99 -99.99  10.70 
1970 07 99.99 -99.99  12.10 
1970 08 99.99 -99.99  10.40 
1970 09 99.99 -99.99   4.00 
1970 10 99.99 -99.99  -4.90 
1970 11 99.99 -99.99 -17.40 
1980 11 99.99 -99.99 -10.50 
1980 12 99.99 -99.99 -29.60 
1981 01 99.99 -99.99 -13.20 
1981 02 99.99 -99.99 -18.40 
1981 03 99.99 -99.99  -9.39 
1981 05 99.99 -99.99   7.90 
1981 06 99.99 -99.99  10.00 
1981 07 99.99 -99.99  14.40 
1981 08 99.99 -99.99  12.20 
1981 09 99.99 -99.99   5.60 
1981 10 99.99 -99.99  -4.30 
1981 11 99.99 -99.99 -10.80 
1981 12 99.99 -99.99 -23.00 
1982 01 99.99 -99.99 -35.59 
1982 02 99.99 -99.99 -22.70 
1982 03 99.99 -99.99 -16.79 
1982 04 99.99 -99.99  -6.30 
1982 05 99.99 -99.99   4.50 
