1987 06 26.15  20.63  23.39 
1987 07 32.06  20.65  26.35 
1987 08 34.16  20.81  27.48 
1987 09 34.07  20.46  27.27 
1987 10 33.16  17.73  25.44 
1987 11 32.66  15.70  24.18 
1987 12 32.41  15.00  23.71 
1988 01 31.90  13.13  22.51 
1988 02 35.72  15.21  25.46 
1988 03 37.59  18.10  27.84 
1988 04 40.59  19.67  30.13 
1988 05 41.32  21.19  31.25 
1988 06 36.93  22.47  29.70 
1988 07 32.97  20.06  26.51 
1988 08 33.23  20.10  26.66 
1989 05 40.41  21.32  30.87 
1989 06 34.80  20.80  27.80 
1989 07 33.34  19.35  26.34 
1989 08 31.10  19.54  25.32 
1989 09 31.07  19.37  25.22 
1989 10 31.10  17.19  24.14 
1989 11 32.27  15.80  24.03 
1989 12 29.80  13.00  21.40 
1990 01 32.34  13.26  22.80 
1990 02 33.82  15.43  24.62 
1990 03 37.13  17.16  27.14 
1990 04 40.07  20.20  30.13 
1990 05 37.09  21.35  29.22 
1990 06 35.09  20.60  27.84 
1990 07 31.97  19.65  25.81 
1990 08 33.87  18.90  26.38 
1990 09 32.59  19.46  26.03 
1990 10 32.65  18.68  25.66 
1990 11 31.50  15.43  23.46 
1990 12 30.94  12.48  21.71 
1991 01 31.94  12.90  22.42 
1991 02 35.39  16.18  25.78 
1991 03 39.48  16.12  27.80 
1991 04 41.20  19.33  30.26 
1991 05 40.06  21.42  30.74 
1991 06 35.40  21.13  28.26 
1991 07 33.13  19.42  26.27 
1991 08 34.09  19.29  26.69 
1991 09 30.70  19.20  24.95 
1991 10 31.10  18.42  24.76 
1991 11 30.37  16.07  23.22 
1991 12 30.06  14.74  22.40 
1992 01 29.03  14.55  21.79 
1992 02 30.72  13.55  22.13 
1992 03 37.06  17.58  27.32 
1992 04 38.63  19.83  29.23 
1992 05 37.68  20.26  28.97 
1992 06 36.83  22.00  29.41 
1992 07 33.52  19.45  26.48 
1992 08 32.13  19.61  25.87 
1992 09 31.57  19.12  25.34 
1992 10 31.45  18.35  24.90 
1992 11 30.63  16.62  23.63 
1992 12 30.29  13.97  22.13 
1993 01 31.42  13.94  22.68 
1993 02 34.21  14.29  24.25 
1993 03 37.03  15.81  26.42 
1993 04 40.00  17.93  28.96 
1993 05 40.93  20.35  30.64 
1993 06 36.37  20.73  28.55 
1993 07 31.55  17.29  24.42 
1993 08 32.03  16.74  24.38 
1993 09 28.50  16.00  22.25 
1993 10 28.97  14.94  21.95 
1993 11 28.33  12.73  20.53 
1993 12 27.61   8.64  18.13 
1994 01 28.13  10.32  19.22 
1994 02 30.54  11.75  21.14 
1995 02 34.12  16.34  25.23 
1995 03 36.89  17.69  27.29 
1995 04 37.80  19.65  28.72 
1995 05 37.84  21.08  29.46 
1995 06 34.73  20.72  27.72 
1995 07 32.95  19.19  26.07 
1995 08 31.58  19.58  25.58 
1995 11 33.34  16.04  24.70 
1995 12 31.82  13.31  22.56 
1996 01 31.32  10.50  20.91 
1996 02 34.07  13.55  23.81 
1996 03 35.71  15.65  25.68 
1996 04 37.50  18.40  27.95 
1996 05 37.53  20.94  29.23 
1996 06 33.22  19.32  26.27 
1996 07 32.53  18.89  25.71 
1996 08 32.53  19.10  25.81 
1996 09 33.20  19.03  26.11 
1996 10 32.06  17.53  24.79 
1996 11 33.15  14.68  23.91 
1996 12 32.77  14.13  23.45 
1997 01 32.13  12.52  22.32 
1997 02 35.27  15.80  25.53 
1997 03 36.20  17.06  26.63 
1997 04 36.28  17.96  27.12 
1997 05 37.18  19.11  28.14 
1997 06 99.99  17.10 -99.99 
1997 08 99.99  17.79 -99.99 
1997 09 99.99  18.20 -99.99 
1997 10 99.99  15.50 -99.99 
1997 11 99.99  14.00 -99.99 
1997 12 99.99  11.50 -99.99 
1998 01 99.99   8.30 -99.99 
1998 02 99.99   8.39 -99.99 
1998 03 99.99  14.20 -99.99 
1998 04 99.99  17.70 -99.99 
1998 05 99.99  18.60 -99.99 
1998 06 99.99  20.10 -99.99 
1998 07 99.99  18.29 -99.99 
1998 08 99.99  18.00 -99.99 
1998 09 99.99  18.60 -99.99 
1998 10 99.99  16.60 -99.99 
1998 11 99.99  15.10 -99.99 
1998 12 99.99  11.90 -99.99 
1999 01 99.99   9.50 -99.99 
1999 02 99.99  13.10 -99.99 
1999 03 99.99  14.10 -99.99 
1999 06 99.99  18.60 -99.99 
1999 08 99.99  17.10 -99.99 
1999 09 99.99  16.90 -99.99 
1999 10 99.99  13.90 -99.99 
1999 11 99.99  11.60 -99.99 
1999 12 99.99  10.10 -99.99 
2000 01 99.99   9.20 -99.99 
2000 02 99.99  10.60 -99.99 
2000 03 99.99  13.50 -99.99 
2000 04 99.99  16.40 -99.99 
2000 05 99.99  18.60 -99.99 
2000 06 99.99  17.40 -99.99 
2000 08 99.99  16.60 -99.99 
2000 09 99.99  16.70 -99.99 
2000 10 99.99  15.60 -99.99 
2000 11 99.99  13.60 -99.99 
2000 12 99.99  11.20 -99.99 
2001 01 99.99  10.70 -99.99 
2001 02 99.99  10.00 -99.99 
2001 03 99.99  11.50 -99.99 
2001 04 99.99  14.90 -99.99 
2001 05 99.99  16.29 -99.99 
2001 06 99.99  15.60 -99.99 
2001 07 99.99  14.90 -99.99 
2001 08 99.99  14.60 -99.99 
2001 09 99.99  15.30 -99.99 
2001 10 99.99  12.70 -99.99 
2001 11 99.99  10.10 -99.99 
2001 12 99.99   8.70 -99.99 
2002 01 99.99   7.50 -99.99 
2002 02 99.99   9.80 -99.99 
2002 03 99.99  13.00 -99.99 
2002 04 99.99  15.30 -99.99 
2002 05 99.99  16.20 -99.99 
2002 06 99.99  16.20 -99.99 
2002 07 99.99  15.80 -99.99 
2002 09 99.99  17.20 -99.99 
2002 10 99.99  16.20 -99.99 
2002 11 99.99  13.30 -99.99 
2002 12 99.99  11.60 -99.99 
2003 01 99.99  14.90 -99.99 
2003 02 99.99  15.60 -99.99 
2003 03 99.99  17.79 -99.99 
2003 04 99.99  22.50 -99.99 
2003 05 99.99  23.70 -99.99 
2003 06 99.99  24.40 -99.99 
2003 07 99.99  23.50 -99.99 
