1984 08 99.99 -99.99  25.50 
1984 09 99.99 -99.99  26.90 
1984 10 99.99 -99.99  26.20 
1984 11 99.99 -99.99  26.80 
1984 12 99.99 -99.99  26.80 
1985 01 99.99 -99.99  27.60 
1985 02 99.99 -99.99  29.30 
1985 03 99.99 -99.99  29.80 
1985 04 99.99 -99.99  28.80 
1985 05 99.99 -99.99  25.90 
1985 06 99.99 -99.99  25.20 
1985 07 99.99 -99.99  25.10 
1985 08 99.99 -99.99  25.00 
1985 10 99.99 -99.99  26.20 
1985 11 99.99 -99.99  26.40 
1985 12 99.99 -99.99  26.40 
1986 01 99.99 -99.99  27.20 
1986 02 99.99 -99.99  28.00 
1986 03 99.99 -99.99  29.50 
1986 04 99.99 -99.99  27.80 
1986 06 99.99 -99.99  25.60 
1986 07 99.99 -99.99  25.40 
1986 08 99.99 -99.99  25.80 
1986 09 99.99 -99.99  25.90 
1986 10 99.99 -99.99  26.10 
1986 11 99.99 -99.99  26.50 
1986 12 99.99 -99.99  27.40 
1987 01 99.99 -99.99  26.90 
1987 02 99.99 -99.99  29.00 
1987 03 99.99 -99.99  29.20 
1987 04 99.99 -99.99  33.50 
1987 05 99.99 -99.99  26.60 
1987 06 99.99 -99.99  25.70 
1987 07 99.99 -99.99  25.50 
1987 08 99.99 -99.99  26.10 
1987 10 99.99 -99.99  26.00 
1987 11 99.99 -99.99  26.90 
1987 12 99.99 -99.99  26.20 
1988 01 99.99 -99.99  27.60 
1988 02 99.99 -99.99  29.00 
1988 03 99.99 -99.99  29.80 
1988 04 99.99 -99.99  29.00 
1988 05 99.99 -99.99  27.10 
1988 06 99.99 -99.99  25.70 
1988 07 99.99 -99.99  25.60 
1988 08 99.99 -99.99  25.90 
1988 09 99.99 -99.99  26.30 
1988 10 99.99 -99.99  26.70 
1988 11 99.99 -99.99  26.00 
1988 12 99.99 -99.99  26.10 
1989 01 99.99 -99.99  25.70 
1989 02 99.99 -99.99  27.50 
1989 04 99.99 -99.99  29.20 
1989 05 99.99 -99.99  26.60 
1989 06 99.99 -99.99  26.90 
1989 07 99.99 -99.99  25.30 
1989 08 99.99 -99.99  26.00 
1989 09 99.99 -99.99  27.20 
1989 10 99.99 -99.99  26.40 
1989 11 99.99 -99.99  27.40 
1989 12 99.99 -99.99  26.80 
1990 01 99.99 -99.99  27.70 
1990 02 99.99 -99.99  28.60 
1990 03 99.99 -99.99  27.80 
1990 04 99.99 -99.99  27.40 
1990 05 99.99 -99.99  26.10 
1990 07 99.99 -99.99  26.00 
1990 08 99.99 -99.99  25.60 
1990 09 99.99 -99.99  26.70 
1990 10 99.99 -99.99  26.80 
1990 11 99.99 -99.99  27.60 
1990 12 99.99 -99.99  26.70 
1991 01 99.99 -99.99  27.40 
1991 02 99.99 -99.99  29.30 
1991 03 99.99 -99.99  28.00 
1991 04 99.99 -99.99  27.30 
1991 05 99.99 -99.99  26.40 
1991 06 99.99 -99.99  26.80 
1991 07 99.99 -99.99  25.30 
1991 08 99.99 -99.99  25.80 
1991 09 99.99 -99.99  26.40 
1991 10 99.99 -99.99  26.30 
1991 11 99.99 -99.99  26.90 
1991 12 99.99 -99.99  26.60 
1996 03 30.80  22.10  26.45 
1996 04 31.80  23.40  27.59 
1996 05 29.30  23.50  26.40 
1996 06 27.90  23.60  25.75 
1996 07 27.90  22.40  25.15 
1996 08 27.50  23.80  25.65 
1996 09 28.70  23.80  26.25 
1996 10 28.40  23.40  25.90 
1996 11 30.20  23.40  26.80 
1996 12 27.60 -99.99 -99.99 
1997 01 28.10  26.30  27.20 
1997 02 28.80  22.90  25.84 
1997 03 29.20  24.50  26.85 
1997 04 30.00  24.00  27.00 
1997 05 28.30  21.80  25.05 
1997 06 29.40  23.80  26.59 
1997 07 28.00  23.60  25.80 
1997 08 28.80  25.00  26.90 
1997 09 29.40  23.00  26.20 
1997 10 30.20  24.40  27.30 
1997 11 29.40  25.40  27.40 
1997 12 28.80  26.40  27.59 
1998 01 31.10  27.00  29.05 
1998 03 32.00  25.00  28.50 
1998 04 30.50  24.30  27.40 
1998 05 29.50  24.80  27.15 
1998 06 29.20  22.00  25.60 
1998 07 28.20  23.70  25.95 
1998 08 28.80  23.80  26.30 
1998 09 29.40  24.90  27.15 
1998 10 28.80  23.80  26.30 
1998 11 28.00  23.40  25.70 
1998 12 28.40  26.00  27.20 
1999 01 28.60  26.20  27.40 
1999 02 29.80  22.90  26.34 
1999 03 29.20  23.20  26.20 
1999 04 28.50  23.00  25.75 
1999 05 29.00  23.70  26.35 
1999 06 28.20  23.60  25.90 
1999 07 27.80  22.20  25.00 
1999 08 28.20  22.80  25.50 
1999 09 28.80  22.70  25.75 
1999 10 28.20  24.30  26.25 
1999 11 29.00  23.10  26.05 
1999 12 29.40  24.30  26.84 
2000 01 28.00  25.80  26.90 
2000 02 28.60  26.30  27.45 
2000 03 30.50  24.00  27.25 
2000 04 29.40  25.60  27.50 
2000 05 30.00  23.50  26.75 
2000 06 27.40  23.30  25.34 
2000 07 28.10  22.90  25.50 
2000 08 27.70  22.30  25.00 
2000 09 28.30  23.10  25.70 
2000 10 28.60  23.30  25.95 
2000 11 28.30  24.90  26.59 
2000 12 27.70  25.60  26.65 
2001 01 27.80  25.00  26.40 
2001 02 28.60  26.40  27.50 
2001 03 31.10  26.00  28.55 
2001 04 30.90  25.50  28.20 
2001 05 29.10  23.10  26.10 
2001 06 28.50  22.70  25.60 
2001 07 29.20  23.40  26.30 
2001 08 28.80  23.20  26.00 
2001 09 29.20  24.00  26.60 
2001 10 28.70  23.50  26.10 
2001 11 28.60  22.70  25.65 
2001 12 28.40  25.30  26.84 
