1981 02 99.99 -99.99 -14.90 
1981 03 99.99 -99.99 -20.40 
1981 04 99.99 -99.99 -35.00 
1981 05 99.99 -99.99 -31.20 
1981 06 99.99 -99.99 -28.60 
1981 07 99.99 -99.99 -33.00 
1981 08 99.99 -99.99 -36.40 
1981 09 99.99 -99.99 -37.59 
1981 10 99.99 -99.99 -27.20 
1981 11 99.99 -99.99 -17.60 
1981 12 99.99 -99.99  -7.90 
1982 01 99.99 -99.99  -7.10 
1982 02 99.99 -99.99 -14.50 
1982 05 99.99 -99.99 -35.09 
1982 06 99.99 -99.99 -35.09 
1982 07 99.99 -99.99 -39.09 
1982 08 99.99 -99.99 -31.70 
1982 09 99.99 -99.99 -35.59 
1982 10 99.99 -99.99 -26.50 
1982 11 99.99 -99.99 -15.40 
1982 12 99.99 -99.99  -6.30 
1983 01 99.99 -99.99  -7.90 
1983 02 99.99 -99.99 -18.70 
1983 03 99.99 -99.99 -25.20 
1983 04 99.99 -99.99 -23.60 
1983 05 99.99 -99.99 -24.30 
1983 09 99.99 -99.99 -35.20 
1983 11 99.99 -99.99 -16.20 
1983 12 99.99 -99.99  -9.30 
1985 01 99.99 -99.99  -8.39 
1985 02 99.99 -99.99 -18.50 
1985 03 99.99 -99.99 -23.70 
1985 04 99.99 -99.99 -32.00 
1985 05 99.99 -99.99 -31.60 
1985 06 99.99 -99.99 -32.59 
1985 07 99.99 -99.99 -42.90 
1985 08 99.99 -99.99 -37.80 
1985 11 99.99 -99.99 -18.60 
1985 12 99.99 -99.99  -9.80 
