1991 01 24.40  18.29  21.34 
1991 02 24.20  18.00  21.10 
1991 03 26.90  20.00  23.45 
1991 04 32.59  24.60  28.59 
1991 05 34.00  26.70  30.35 
1991 06 35.09  28.90  32.00 
1991 07 36.59  30.60  33.59 
1991 08 36.00  30.40  33.20 
1991 09 35.59  29.40  32.50 
1991 10 32.00  25.80  28.90 
1991 11 29.10  21.40  25.25 
1991 12 25.20  18.70  21.95 
1992 01 21.40  15.00  18.20 
1992 02 22.50  15.80  19.15 
1992 03 24.80  18.20  21.50 
1992 04 29.90  21.70  25.80 
1992 05 38.20  26.80  32.50 
1992 06 38.40  29.10  33.75 
1992 07 37.20  30.20  33.70 
1992 08 36.80  30.70  33.75 
1992 09 35.90  28.40  32.15 
1992 10 33.09  25.40  29.25 
1992 11 29.50  21.50  25.50 
1992 12 25.40  18.90  22.15 
1993 01 23.00  16.50  19.75 
1993 02 24.70  18.00  21.35 
1993 03 27.40  20.50  23.95 
1993 04 32.59  24.00  28.30 
1993 05 36.59  27.40  32.00 
1993 06 39.20  30.90  35.05 
1993 07 38.50  31.60  35.05 
1993 08 39.30  32.00  35.65 
1993 09 35.40  30.30  32.84 
1993 10 34.40  26.70  30.55 
1993 11 30.30  23.00  26.65 
1993 12 27.10  19.40  23.25 
1994 01 24.80  17.90  21.34 
1994 02 24.90  18.60  21.75 
1994 03 26.40  21.90  24.15 
1994 04 32.40  24.40  28.40 
1994 05 35.90  27.80  31.85 
1994 06 40.50  31.60  36.05 
1994 07 36.90  32.20  34.55 
1994 08 37.50  32.20  34.84 
1994 09 36.30  30.10  33.20 
1994 10 33.59  26.80  30.20 
1994 11 30.60  23.90  27.25 
1994 12 25.90  18.90  22.40 
1995 01 25.70  18.40  22.05 
1995 02 25.40  19.10  22.25 
1995 03 26.20  19.70  22.95 
1995 04 31.20  23.60  27.40 
1995 05 35.80  27.80  31.80 
1995 06 37.90  30.10  34.00 
1995 07 36.80  31.50  34.15 
1995 08 38.30  32.09  35.19 
1995 09 36.80  30.10  33.45 
1995 10 34.30  27.50  30.90 
1995 11 30.00  21.90  25.95 
1995 12 24.40  18.60  21.50 
1996 01 23.00  16.70  19.85 
1996 02 24.50  18.40  21.45 
1996 03 26.70  20.70  23.70 
1996 04   .30    .20    .25 
1996 05 36.09  27.70  31.90 
1996 06 38.80  31.00  34.90 
1996 07 40.09  32.59  36.34 
1996 08 37.50  32.09  34.80 
1996 09 35.70  30.60  33.15 
1996 10 33.50  26.20  29.85 
1996 11 28.60  21.70  25.15 
1996 12 25.60  18.00  21.80 
1997 01 23.70  16.60  20.15 
1997 02 25.20  18.79  22.00 
1997 03 25.40  19.70  22.55 
1997 04 29.40  22.80  26.09 
1997 05 35.59  27.20  31.40 
1997 06 37.80  30.40  34.09 
1997 07 37.40  32.20  34.80 
1997 08 36.50  32.00  34.25 
1997 09 37.09  30.90  34.00 
1997 10 34.30  27.80  31.05 
1997 11 28.30  22.30  25.30 
1997 12 25.40  19.10  22.25 
1998 01 23.30  16.40  19.84 
1998 02 24.10  18.00  21.05 
1998 03 27.90  20.90  24.40 
1998 04 33.30  24.90  29.09 
1998 05 38.20  29.10  33.65 
1998 06 39.30  31.20  35.25 
1998 07 39.30  33.00  36.15 
1998 08 38.70  32.70  35.70 
1998 09 36.30  30.80  33.55 
1998 10 35.00  27.60  31.30 
1998 11 29.80  22.80  26.30 
1998 12 27.90  20.40  24.15 
1999 01 24.80  18.70  21.75 
1999 02 26.60  20.70  23.65 
1999 03 27.90  20.70  24.30 
1999 04 33.59  25.20  29.40 
1999 05 38.30  28.50  33.40 
1999 06 39.09  31.20  35.15 
1999 07 38.20  32.09  35.15 
1999 08 38.30  32.20  35.25 
1999 09 35.50  30.30  32.90 
1999 10 34.50  27.40  30.95 
1999 11 30.70  24.10  27.40 
1999 12 26.60  18.90  22.75 
2000 01 25.20  19.00  22.10 
2000 02 25.50  18.70  22.10 
2000 03 28.40  21.50  24.95 
2000 04 35.09  25.50  30.30 
2000 05 37.00  28.80  32.90 
2000 06 37.40  30.20  33.80 
2000 07 38.80  31.80  35.30 
2000 08 38.59  31.50  35.05 
2000 09 36.20  30.20  33.20 
2000 10 34.00  27.30  30.65 
2000 11 28.90  22.70  25.80 
2000 12 25.50  18.50  22.00 
2001 04 31.32  25.37  28.34 
2002 11 28.94  24.02  26.48 
2003 02 24.73  20.33  22.53 
2003 08 36.48  32.39  34.43 
2003 11 29.06  24.41  26.73 
2004 01 24.31  19.77  22.04 
2004 11 31.89  18.77  25.33 
2004 12 26.00  15.81  20.90 
2005 01 23.37  13.81  18.59 
2005 02 24.71  15.10  19.90 
2005 03 28.97  20.04  24.50 
2005 09 37.75  30.81  34.28 
2005 10 34.66  26.61  30.64 
2005 11 29.58  22.82  26.20 
2005 12 26.23  19.51  22.87 
2006 02 27.11  20.15  23.63 
2006 03 27.83  20.19  24.01 
2006 10 35.22  28.15  31.68 
2006 11 29.01  22.81  25.91 
2006 12 21.76  16.51  19.13 
2007 01 22.12  15.56  18.84 
2007 02 24.76  17.77  21.26 
2007 03 27.97  21.71  24.84 
2007 04 35.58  27.25  31.41 
2007 12 25.80  19.19  22.49 
2008 03 30.61  21.57  26.09 
2008 04 34.23  26.10  30.16 
2008 05 39.59  32.86  36.22 
2008 06 38.50  31.74  35.12 
2008 07 39.36  33.29  36.32 
2008 12 23.80  17.28  20.54 
2009 04 31.59  24.83  28.21 
2009 05 40.06  31.49  35.77 
2009 06 40.02  32.50  36.26 
2009 07 39.22  33.58  36.40 
2009 08 39.45  33.86  36.65 
2009 09 37.06  31.03  34.04 
2009 10 34.88  27.35  31.11 
2009 11 30.30  23.63  26.96 
2009 12 25.58  19.82  22.70 
2010 01 25.46  17.99  21.72 
2010 02 26.51  19.68  23.09 
2010 03 31.82  23.86  27.84 
2010 04 36.31  29.07  32.69 
2010 05 38.75  30.63  34.69 
2010 06 40.55  32.49  36.52 
2010 07 40.63  34.63  37.63 
2010 08 39.80  33.34  36.57 
2010 09 38.78  31.71  35.24 
2010 10 36.00  28.88  32.44 
2010 11 30.41  22.90  26.65 
2010 12 26.98  18.49  22.73 
2011 01 24.51  18.90  21.70 
2011 02 25.46  19.95  22.70 
2011 03 30.57  23.26  26.91 
2011 04 33.39  26.36  29.87 
2011 07 40.90  34.97  37.93 
2011 08 40.06  33.88  36.97 
2011 09 39.23  32.72  35.97 
2011 10 35.07  28.82  31.94 
2011 12 25.98  18.20  22.09 
2012 01 24.83  17.92  21.37 
2012 02 25.50  19.24  22.37 
2012 03 29.48  22.51  25.99 
2012 04 34.09  27.39  30.74 
2012 06 36.99  31.46  34.22 
2012 07 39.18  32.95  36.07 
2012 08 37.30  32.86  35.08 
2012 09 37.14  32.16  34.65 
2012 10 33.68  27.81  30.75 
2012 11 28.63  23.79  26.21 
2012 12 24.57  19.20  21.88 
2013 01 22.94  18.51  20.72 
2013 02 25.43  19.46  22.45 
2013 03 28.06  22.36  25.21 
2013 04 31.59  26.21  28.90 
2013 05 35.20  29.79  32.49 
2013 06 35.00  30.85  32.92 
2013 08 36.30  32.09  34.19 
2013 09 35.40  31.02  33.21 
2013 10 33.68  28.56  31.12 
2013 11 28.28  23.02  25.65 
2013 12 24.90  19.82  22.36 
