1981 01 99.99 -99.99  26.30 
1981 02 99.99 -99.99  26.60 
1981 03 99.99 -99.99  24.30 
1981 04 99.99 -99.99  22.40 
1981 05 99.99 -99.99  22.10 
1981 06 99.99 -99.99  15.40 
1981 07 99.99 -99.99  16.00 
1981 08 99.99 -99.99  20.40 
1981 09 99.99 -99.99  18.90 
1981 10 99.99 -99.99  22.20 
1981 11 99.99 -99.99  24.40 
1982 01 99.99 -99.99  26.20 
1982 02 99.99 -99.99  25.60 
1982 03 99.99 -99.99  24.00 
1982 04 99.99 -99.99  22.20 
1982 05 99.99 -99.99  19.29 
1982 06 99.99 -99.99  17.90 
1982 07 99.99 -99.99  19.29 
1982 08 99.99 -99.99  20.60 
1982 09 99.99 -99.99  21.30 
1982 10 99.99 -99.99  22.80 
1982 11 99.99 -99.99  23.80 
1982 12 99.99 -99.99  24.30 
1983 01 99.99 -99.99  26.30 
1983 02 99.99 -99.99  25.60 
1983 03 99.99 -99.99  24.10 
1983 04 99.99 -99.99  22.30 
1983 05 99.99 -99.99  20.29 
1983 06 99.99 -99.99  14.70 
1983 07 99.99 -99.99  16.50 
1983 08 99.99 -99.99  17.90 
1983 09 99.99 -99.99  17.90 
1983 10 99.99 -99.99  22.50 
1983 11 99.99 -99.99  22.70 
1983 12 99.99 -99.99  25.90 
1984 01 99.99 -99.99  26.90 
1984 02 99.99 -99.99  27.20 
1984 03 99.99 -99.99  25.20 
1984 04 99.99 -99.99  20.29 
1984 05 99.99 -99.99  20.90 
1984 06 99.99 -99.99  17.20 
1984 07 99.99 -99.99  18.60 
1984 08 99.99 -99.99  15.50 
1984 09 99.99 -99.99  20.90 
1984 10 99.99 -99.99  25.60 
1984 11 99.99 -99.99  24.80 
1984 12 99.99 -99.99  23.90 
1985 01 99.99 -99.99  26.60 
1985 02 99.99 -99.99  27.00 
1985 03 99.99 -99.99  25.70 
1985 04 99.99 -99.99  22.50 
1985 05 99.99 -99.99  20.10 
1985 06 99.99 -99.99  17.20 
1985 07 99.99 -99.99  16.50 
1985 08 99.99 -99.99  17.60 
1985 09 99.99 -99.99  20.00 
1985 10 99.99 -99.99  23.50 
1985 11 99.99 -99.99  26.10 
1985 12 99.99 -99.99  27.90 
1986 01 99.99 -99.99  27.20 
1986 02 99.99 -99.99  26.30 
1986 03 99.99 -99.99  24.30 
1986 04 99.99 -99.99  23.80 
1986 05 99.99 -99.99  20.10 
1986 06 99.99 -99.99  19.20 
1986 07 99.99 -99.99  16.79 
1986 08 99.99 -99.99  19.10 
1986 09 99.99 -99.99  19.60 
1986 10 99.99 -99.99  22.10 
1986 11 99.99 -99.99  25.50 
1986 12 99.99 -99.99  25.20 
1987 01 99.99 -99.99  26.30 
1987 02 99.99 -99.99  24.00 
1987 03 99.99 -99.99  24.30 
1987 04 99.99 -99.99  22.80 
1987 05 99.99 -99.99  15.70 
1987 06 99.99 -99.99  15.70 
1987 07 99.99 -99.99  20.29 
1987 08 99.99 -99.99  17.10 
1987 09 99.99 -99.99  19.40 
1987 10 99.99 -99.99  22.00 
1987 11 99.99 -99.99  25.60 
1987 12 99.99 -99.99  24.70 
1988 01 99.99 -99.99  26.30 
1988 02 99.99 -99.99  24.10 
1988 03 99.99 -99.99  26.30 
1988 04 99.99 -99.99  21.70 
1988 05 99.99 -99.99  16.10 
1988 06 99.99 -99.99  15.30 
1988 07 99.99 -99.99  14.20 
1988 08 99.99 -99.99  20.10 
1988 09 99.99 -99.99  20.60 
1988 10 99.99 -99.99  21.20 
1988 11 99.99 -99.99  24.90 
1988 12 99.99 -99.99  26.30 
1989 01 99.99 -99.99  25.00 
1989 02 99.99 -99.99  25.30 
1989 03 99.99 -99.99  24.30 
1989 04 99.99 -99.99  22.50 
1989 05 99.99 -99.99  19.00 
1989 06 99.99 -99.99  17.90 
1989 07 99.99 -99.99  16.40 
1989 08 99.99 -99.99  18.70 
1989 09 99.99 -99.99  18.10 
1989 10 99.99 -99.99  21.90 
1989 11 99.99 -99.99  24.60 
1989 12 99.99 -99.99  26.60 
1990 05 99.99 -99.99  17.60 
1990 06 99.99 -99.99  15.60 
1990 07 99.99 -99.99  13.40 
1990 08 99.99 -99.99  18.50 
1990 09 99.99 -99.99  18.00 
1990 10 99.99 -99.99  23.90 
1990 11 99.99 -99.99  25.70 
1990 12 99.99 -99.99  25.60 
1995 02 29.10  22.60  25.85 
1995 04 27.60  11.70  19.65 
1995 06 26.50   8.89  17.70 
1995 09 25.70   9.89  17.79 
1995 12 30.30  22.50  26.40 
1996 01 28.70  23.20  25.95 
1996 02 29.40  20.70  25.05 
1996 04 28.20  12.80  20.50 
1996 05 26.30  10.70  18.50 
1996 06 25.60   4.80  15.20 
1996 07 23.70  10.10  16.90 
1996 08 27.80  15.40  21.59 
1996 10 28.60  19.00  23.80 
1996 12 28.80  22.00  25.40 
1997 01 29.70  24.90  27.30 
1997 04 26.00  14.80  20.40 
1997 05 27.30   9.89  18.59 
1997 06 26.40   8.60  17.50 
1997 08 27.50  10.10  18.79 
1997 09 29.90  16.29  23.09 
1997 12 30.80  24.40  27.59 
1998 04 29.70  17.00  23.35 
1998 05 25.80  13.60  19.70 
1998 06 24.70  10.40  17.54 
1998 08 23.70  12.00  17.85 
1998 09 28.40  11.60  20.00 
1998 10 27.60  18.50  23.05 
1998 11 28.30  18.70  23.50 
1999 01 29.40  23.80  26.59 
1999 02 29.00  25.00  27.00 
1999 03 29.10  22.50  25.80 
1999 04 27.60  11.10  19.35 
1999 05 25.80  10.30  18.04 
1999 06 23.80  10.50  17.15 
1999 07 25.00   8.60  16.79 
1999 08 29.90   5.90  17.90 
1999 09 30.80  18.00  24.40 
1999 10 30.30  14.20  22.25 
1999 11 29.60  18.00  23.80 
1999 12 29.50  23.00  26.25 
2000 01 31.50  25.60  28.55 
2000 02 29.70  24.10  26.90 
2000 03 28.00  18.20  23.10 
2000 04 27.40  17.50  22.45 
2000 05 25.10  12.60  18.85 
2000 06 25.90   9.80  17.85 
2000 07 23.70   3.90  13.80 
2000 08 27.00   8.89  17.95 
2000 09 28.10  13.20  20.65 
2000 10 29.00  21.00  25.00 
2000 11 28.40  16.50  22.45 
2000 12 29.10  22.30  25.70 
2001 01 29.40  22.60  26.00 
2001 02 29.20  24.80  27.00 
2001 03 29.60  21.00  25.30 
2001 04 27.30  17.90  22.59 
2001 05 24.70  10.90  17.79 
2001 06 25.90   6.60  16.25 
2001 07 26.40   7.00  16.70 
2001 08 28.30  13.50  20.90 
2003 09 28.20  16.79  22.50 
2003 10 31.00  20.00  25.50 
2004 03 32.40  19.60  26.00 
2004 08 26.00  14.20  20.10 
2004 09 28.20  17.20  22.70 
