1982 11 99.99 -99.99  26.70 
1983 01 99.99 -99.99  24.80 
1983 02 99.99 -99.99  28.10 
1983 03 99.99 -99.99  29.30 
1983 04 99.99 -99.99  29.30 
1983 05 99.99 -99.99  28.20 
1983 06 99.99 -99.99  26.60 
1983 07 99.99 -99.99  26.40 
1983 08 99.99 -99.99  25.80 
1983 09 99.99 -99.99  26.20 
1983 10 99.99 -99.99  26.70 
1983 11 99.99 -99.99  27.10 
1983 12 99.99 -99.99  26.10 
1984 01 99.99 -99.99  25.70 
1984 02 99.99 -99.99  25.60 
1984 03 99.99 -99.99  29.20 
1984 04 99.99 -99.99  28.70 
1984 05 99.99 -99.99  27.40 
1984 06 99.99 -99.99  26.60 
1984 07 99.99 -99.99  25.90 
1984 08 99.99 -99.99  26.10 
1984 09 99.99 -99.99  26.20 
1984 10 99.99 -99.99  26.60 
1984 11 99.99 -99.99  27.20 
1984 12 99.99 -99.99  25.70 
1985 01 99.99 -99.99  26.40 
1985 02 99.99 -99.99  27.90 
1985 03 99.99 -99.99  28.50 
1985 04 99.99 -99.99  29.10 
1985 05 99.99 -99.99  28.50 
1985 06 99.99 -99.99  26.60 
1985 07 99.99 -99.99  25.50 
1985 08 99.99 -99.99  25.80 
1985 09 99.99 -99.99  25.90 
1985 10 99.99 -99.99  26.40 
1985 11 99.99 -99.99  26.90 
1985 12 99.99 -99.99  24.90 
1986 01 99.99 -99.99  24.20 
1986 03 99.99 -99.99  27.40 
1986 04 99.99 -99.99  26.30 
1986 05 99.99 -99.99  25.70 
1986 07 99.99 -99.99  25.30 
1986 08 99.99 -99.99  22.40 
1986 09 99.99 -99.99  25.60 
1986 10 99.99 -99.99  24.80 
1986 12 99.99 -99.99  23.30 
1987 02 99.99 -99.99  25.80 
1987 06 99.99 -99.99  27.40 
1987 07 99.99 -99.99  27.00 
1990 01 99.99 -99.99  25.20 
1990 02 99.99 -99.99  27.10 
1990 03 99.99 -99.99  28.50 
1990 04 99.99 -99.99  28.00 
1990 05 99.99 -99.99  28.60 
1990 06 99.99 -99.99  27.10 
1990 07 99.99 -99.99  26.00 
1990 08 99.99 -99.99  26.30 
1990 09 99.99 -99.99  26.70 
1990 10 99.99 -99.99  26.80 
1990 11 99.99 -99.99  27.20 
1990 12 99.99 -99.99  26.30 
1996 10 32.59  22.60  27.59 
1996 12 32.09  22.40  27.25 
