1990 04 99.99 -99.99  28.80 
1990 09 99.99 -99.99  14.60 
1991 03 99.99 -99.99  29.60 
1992 07 99.99 -99.99  23.40 
1992 09 99.99 -99.99  23.40 
1992 11 99.99 -99.99  23.30 
1992 12 99.99 -99.99  22.60 
1993 04 99.99 -99.99  27.40 
1993 05 99.99 -99.99  26.80 
1993 06 99.99 -99.99  24.70 
1993 07 99.99 -99.99  23.80 
1993 08 99.99 -99.99  23.70 
1993 09 99.99 -99.99  23.80 
1993 10 99.99 -99.99  24.20 
1994 01 99.99 -99.99  22.30 
1994 02 99.99 -99.99  25.80 
1994 03 99.99 -99.99  28.20 
1994 04 99.99 -99.99  28.00 
1994 05 99.99 -99.99  26.40 
1994 09 99.99 -99.99  23.80 
1994 10 99.99 -99.99  23.70 
1994 12 99.99 -99.99  20.80 
1996 01 99.99 -99.99  23.20 
1996 03 99.99 -99.99  28.20 
1996 05 99.99 -99.99  27.10 
1996 08 99.99 -99.99  23.60 
2003 02 99.99 -99.99  28.10 
