1991 01 99.99  22.50 -99.99 
1991 02 99.99  23.00 -99.99 
1991 03 99.99  22.90 -99.99 
1991 04 99.99  22.80 -99.99 
1991 05 99.99  22.40 -99.99 
1991 06 99.99  21.50 -99.99 
1991 07 99.99  21.30 -99.99 
1991 08 99.99  21.60 -99.99 
1991 09 99.99  20.00 -99.99 
1991 10 99.99  21.20 -99.99 
1991 11 99.99  22.50 -99.99 
1991 12 99.99  23.10 -99.99 
1992 01 32.00  22.70  27.35 
1992 02 32.90  22.70  27.80 
1992 03 32.50  23.00  27.75 
1992 04 32.30  23.30  27.80 
1992 05 31.50  23.00  27.25 
1992 06 31.10  22.10  26.60 
1992 07 29.70  21.80  25.75 
1992 08 29.60  21.30  25.45 
1992 09 31.20  22.00  26.60 
1992 10 31.10  22.30  26.70 
1992 11 31.90  22.50  27.20 
1992 12 31.70  23.20  27.45 
1993 01 31.80  23.00  27.40 
1993 02 31.80  22.90  27.34 
1993 03 31.90  23.00  27.45 
1993 04 31.40  23.10  27.25 
1993 05 30.60  22.80  26.70 
1993 06 30.20  22.10  26.15 
1993 07 29.40  21.40  25.40 
1993 08 30.00  19.00  24.50 
1993 09 30.30  20.70  25.50 
1993 10 31.40  21.40  26.40 
1993 11 31.90  23.10  27.50 
1993 12 32.80  23.90  28.34 
1994 01 31.80  23.20  27.50 
1994 02 31.60  22.80  27.20 
1994 03 31.20  23.00  27.10 
1994 04 30.90  22.80  26.84 
1994 05 30.10  22.60  26.35 
1994 06 29.80  21.80  25.80 
1994 07 29.40  20.40  24.90 
1994 08 29.10  20.70  24.90 
1994 09 30.20  19.00  24.60 
1994 10 30.80  21.30  26.05 
1994 11 31.30  22.70  27.00 
1994 12 31.40  23.10  27.25 
1995 01 31.60  23.20  27.40 
1995 02 31.40  23.00  27.20 
1995 03 31.50  23.20  27.35 
1995 04 31.90  22.80  27.34 
1995 05 31.00  22.90  26.95 
1995 06 30.20  22.70  26.45 
1995 07 28.80  22.30  25.55 
1995 08 28.30  22.40  25.34 
1995 09 29.40  22.00  25.70 
1995 10 30.70  22.80  26.75 
1995 11 31.40  23.40  27.40 
1995 12 31.70  23.20  27.45 
1996 01 31.20  22.80  27.00 
1996 02 31.20  23.00  27.10 
1996 04 31.20  22.90  27.05 
1996 05 31.10  21.40  26.25 
1996 06 30.10  22.30  26.20 
1998 01 33.30  22.50  27.90 
1998 02 33.20  23.10  28.15 
1998 03 33.30  22.50  27.90 
1998 04 31.40  23.50  27.45 
1998 05 31.70  23.50  27.60 
1998 07 30.20  22.40  26.30 
1998 08 29.40  22.20  25.80 
1998 09 30.50  22.70  26.60 
1998 10 31.40  22.70  27.05 
1999 10 31.00  22.40  26.70 
1999 11 32.00  23.30  27.65 
1999 12 32.20  23.00  27.60 
2000 01 31.30  22.60  26.95 
2000 04 31.90  22.50  27.20 
2000 05 31.50  22.20  26.85 
2000 06 29.40  22.40  25.90 
2000 07 29.60  20.90  25.25 
2000 08 29.30  20.90  25.09 
2000 09 30.20  22.10  26.15 
