1978 01 99.99 -99.99  17.20 
1978 02 99.99 -99.99  15.50 
1978 03 99.99 -99.99  14.70 
1978 04 99.99 -99.99   8.89 
1978 05 99.99 -99.99   6.90 
1978 06 99.99 -99.99   2.90 
1978 07 99.99 -99.99   3.50 
1978 08 99.99 -99.99  11.60 
1978 09 99.99 -99.99   7.60 
1978 10 99.99 -99.99   9.70 
1978 11 99.99 -99.99  14.40 
1978 12 99.99 -99.99  14.80 
1979 01 99.99 -99.99  14.80 
1979 02 99.99 -99.99  16.10 
1979 03 99.99 -99.99  14.00 
1979 04 99.99 -99.99  11.50 
1979 05 99.99 -99.99   7.20 
1979 06 99.99 -99.99   5.30 
1979 07 99.99 -99.99   2.40 
1979 09 99.99 -99.99   8.60 
1979 11 99.99 -99.99  13.80 
1979 12 99.99 -99.99  15.70 
1980 01 99.99 -99.99  15.00 
1980 02 99.99 -99.99  15.40 
1980 03 99.99 -99.99  14.40 
1980 04 99.99 -99.99   9.60 
1980 05 99.99 -99.99   7.00 
1980 06 99.99 -99.99   3.80 
1980 07 99.99 -99.99   3.20 
1980 08 99.99 -99.99   6.70 
1980 09 99.99 -99.99   7.50 
1980 10 99.99 -99.99  12.70 
1980 11 99.99 -99.99  12.60 
1980 12 99.99 -99.99  15.00 
1981 01 99.99 -99.99  16.00 
1981 03 99.99 -99.99  11.60 
1981 04 99.99 -99.99   9.70 
1981 05 99.99 -99.99   5.30 
1981 06 99.99 -99.99   2.40 
1981 07 99.99 -99.99   3.30 
1981 08 99.99 -99.99   3.80 
1981 09 99.99 -99.99   6.60 
1981 10 99.99 -99.99   8.80 
1981 11 99.99 -99.99  13.80 
1981 12 99.99 -99.99  13.90 
1982 01 99.99 -99.99  15.30 
1982 02 99.99 -99.99  15.20 
1982 03 99.99 -99.99  12.50 
1982 04 99.99 -99.99   7.20 
1982 05 99.99 -99.99   6.50 
1982 06 99.99 -99.99   3.10 
1982 07 99.99 -99.99   3.80 
1982 08 99.99 -99.99   4.40 
1982 09 99.99 -99.99  10.60 
1982 10 99.99 -99.99  11.70 
1982 11 99.99 -99.99  12.20 
1982 12 99.99 -99.99  17.60 
1983 01 99.99 -99.99  17.20 
1983 02 99.99 -99.99  15.20 
1983 03 99.99 -99.99  13.20 
1983 04 99.99 -99.99  11.40 
1983 06 99.99 -99.99   3.90 
1983 07 99.99 -99.99   3.50 
1983 09 99.99 -99.99  10.00 
1983 10 99.99 -99.99  11.10 
1983 11 99.99 -99.99  12.30 
1983 12 99.99 -99.99  14.80 
1984 01 99.99 -99.99  14.10 
1984 02 99.99 -99.99  15.40 
1984 03 99.99 -99.99  14.60 
1984 04 99.99 -99.99  10.80 
1984 05 99.99 -99.99   6.30 
1984 06 99.99 -99.99   3.10 
1984 07 99.99 -99.99   3.70 
1984 08 99.99 -99.99   6.10 
1984 09 99.99 -99.99   9.89 
1984 10 99.99 -99.99  12.30 
1984 11 99.99 -99.99  13.00 
1984 12 99.99 -99.99  14.00 
1985 01 99.99 -99.99  17.10 
1985 02 99.99 -99.99  17.20 
1985 03 99.99 -99.99  12.70 
1985 04 99.99 -99.99   9.39 
1985 05 99.99 -99.99   5.60 
1985 06 99.99 -99.99   3.90 
1985 07 99.99 -99.99   3.30 
1985 08 99.99 -99.99   7.90 
1985 09 99.99 -99.99   9.89 
1985 10 99.99 -99.99  13.30 
1985 11 99.99 -99.99  14.60 
1985 12 99.99 -99.99  14.20 
1986 01 99.99 -99.99  15.90 
1986 02 99.99 -99.99  14.30 
1986 03 99.99 -99.99  14.30 
1986 04 99.99 -99.99  11.40 
1986 05 99.99 -99.99   7.60 
1986 06 99.99 -99.99   4.30 
1986 07 99.99 -99.99   4.19 
1986 08 99.99 -99.99   6.60 
1986 09 99.99 -99.99   9.60 
1986 10 99.99 -99.99  11.80 
1986 11 99.99 -99.99  12.80 
1986 12 99.99 -99.99  16.60 
1987 01 99.99 -99.99  17.40 
1987 02 99.99 -99.99  17.60 
1987 03 99.99 -99.99  14.10 
1987 04 99.99 -99.99  12.00 
1987 05 99.99 -99.99   8.39 
1987 06 99.99 -99.99   3.00 
1987 07 99.99 -99.99   8.50 
1987 08 99.99 -99.99   5.30 
1987 09 99.99 -99.99   8.39 
1987 10 99.99 -99.99  11.70 
1987 11 99.99 -99.99  15.10 
1987 12 99.99 -99.99  16.00 
1988 01 99.99 -99.99  17.29 
1988 02 99.99 -99.99  16.50 
1988 03 99.99 -99.99  14.70 
1988 04 99.99 -99.99   9.80 
1988 05 99.99 -99.99   7.00 
1988 06 99.99 -99.99   2.40 
1988 07 99.99 -99.99   3.50 
1988 08 99.99 -99.99   6.20 
1988 09 99.99 -99.99   9.30 
1988 10 99.99 -99.99   9.50 
1988 11 99.99 -99.99  12.80 
1988 12 99.99 -99.99  13.30 
1989 01 99.99 -99.99  15.50 
1989 03 99.99 -99.99  12.30 
1990 01 99.99 -99.99  15.30 
1990 02 99.99 -99.99  13.60 
1990 03 99.99 -99.99  13.10 
1990 04 99.99 -99.99  10.10 
1990 05 99.99 -99.99   5.90 
1990 06 99.99 -99.99   2.00 
1990 07 99.99 -99.99   3.20 
1990 08 99.99 -99.99   5.10 
1990 09 99.99 -99.99   8.80 
1990 10 99.99 -99.99  11.20 
1990 11 99.99 -99.99  14.20 
1990 12 99.99 -99.99  15.30 
