1987 03 29.47  23.87  26.67 
1987 05 32.59  24.83  28.71 
1987 08 32.84  24.81  28.82 
1987 09 33.09  25.00  29.05 
1987 10 32.12  25.03  28.57 
1988 03 30.12  24.37  27.24 
1989 05 29.97  23.66  26.81 
1990 02 30.04  23.92  26.98 
1990 03 31.74  24.37  28.05 
1990 04 31.86  24.44  28.15 
1990 06 32.79  24.25  28.52 
1990 07 32.18  23.57  27.88 
1990 08 32.88  24.34  28.61 
1990 09 33.00  24.50  28.75 
1990 10 33.41  25.06  29.23 
1990 11 32.73  25.20  28.96 
1990 12 32.29  24.88  28.58 
1991 01 30.77  24.35  27.56 
1991 02 31.39  24.53  27.96 
1991 03 29.96  23.98  26.97 
1991 04 31.14  24.02  27.58 
1991 05 30.52  24.01  27.26 
1991 06 31.45  24.36  27.90 
1991 11 31.68  24.95  28.31 
1992 05 31.39  25.13  28.25 
1992 07 31.61  24.25  27.93 
1992 08 31.58  24.50  28.04 
1992 09 32.38  24.96  28.67 
1992 10 32.08  25.00  28.54 
1993 02 30.17  24.65  27.41 
1993 05 31.71  25.19  28.45 
1993 06 31.88  24.85  28.36 
1993 07 31.77  24.70  28.23 
1993 08 32.23  24.80  28.51 
1993 09 33.00  25.13  29.06 
1993 12 32.91  25.87  29.39 
1994 01 29.99  24.36  27.17 
1994 02 30.57  24.59  27.58 
1994 03 30.00  24.27  27.13 
1994 05 31.76  24.69  28.22 
1994 07 31.84  24.23  28.03 
1994 08 32.72  24.64  28.68 
1994 09 33.22  25.28  29.25 
1994 10 33.66  25.73  29.70 
1994 11 33.73  25.67  29.70 
1994 12 33.16  25.38  29.27 
1995 01 31.76  24.96  28.36 
1995 02 29.85  24.27  27.06 
1995 03 30.73  24.63  27.68 
1995 04 29.99  24.30  27.14 
1995 05 31.02  24.44  27.73 
1995 06 31.91  24.35  28.13 
1995 07 32.88  24.50  28.69 
1995 08 33.09  24.57  28.83 
1995 09 33.18  25.05  29.12 
1995 10 32.93  25.40  29.16 
1995 11 32.43  25.34  28.89 
1996 01 31.24  24.68  27.96 
1996 02 31.26  24.62  27.94 
1996 03 30.49  24.40  27.44 
1996 04 30.78  24.27  27.52 
1996 05 31.42  24.73  28.07 
1996 06 31.68  24.51  28.09 
1996 07 32.34  24.09  28.22 
1996 08 32.34  24.48  28.41 
1996 09 33.11  25.19  29.15 
1996 10 31.88  25.80  28.84 
1996 11 32.71  26.07  29.39 
1997 01 30.54  24.66  27.60 
1997 03 29.12  24.14  26.63 
1997 05 29.98  23.78  26.88 
1997 07 30.29  23.88  27.08 
2002 01 30.75  25.51  28.13 
2002 02 31.55  26.22  28.88 
2002 03 30.55  25.55  28.05 
2002 04 30.33  25.49  27.91 
2002 05 31.39  25.99  28.68 
2002 07 31.60  26.13  28.86 
2002 08 32.02  26.19  29.10 
2002 09 32.30  26.52  29.41 
2002 10 32.58  26.71  29.64 
2002 11 32.59  26.62  29.60 
2002 12 32.87  26.98  29.92 
2003 01 31.58  26.32  28.95 
2003 02 30.34  25.24  27.79 
2003 04 30.76  25.52  28.14 
2003 05 31.44  26.17  28.80 
2003 07 31.43  26.01  28.72 
2003 08 30.98  25.61  28.29 
2003 09 31.68  25.75  28.71 
2003 10 31.95  26.47  29.21 
2003 11 31.87  26.69  29.28 
2003 12 31.56  26.74  29.15 
2004 01 30.10  25.65  27.87 
2004 02 29.79  25.51  27.65 
2004 03 30.88  25.29  28.08 
2004 04 30.38  24.88  27.63 
2004 05 31.06  24.91  27.98 
2004 06 30.70  24.16  27.43 
2004 07 30.06  24.00  27.03 
2004 08 30.68  24.58  27.63 
2004 09 31.60  25.20  28.40 
2004 10 31.24  25.59  28.41 
2004 11 31.43  25.51  28.47 
2004 12 31.34  25.69  28.51 
2005 01 30.97  24.84  27.90 
2005 02 30.25  24.73  27.49 
2005 03 29.37  24.31  26.84 
2005 04 30.23  24.45  27.34 
2005 06 31.01  24.43  27.72 
2005 07 30.94  24.28  27.61 
2005 08 31.10  25.09  28.09 
2005 09 31.59  25.13  28.36 
2005 10 31.54  25.79  28.66 
2005 11 32.03  26.29  29.16 
2005 12 31.20  25.66  28.43 
2006 02 29.73  24.74  27.23 
2006 03 29.51  24.51  27.01 
2006 04 28.65  23.93  26.29 
2006 05 29.68  24.06  26.87 
2006 06 30.43  24.24  27.33 
2006 07 30.56  24.66  27.61 
2006 08 30.95  24.91  27.93 
2006 09 31.58  25.40  28.49 
2006 10 31.82  25.61  28.71 
2006 11 31.74  25.81  28.77 
2006 12 31.47  25.82  28.64 
2007 01 31.64  26.17  28.90 
2007 02 29.52  24.11  26.81 
2007 03 29.53  23.90  26.71 
2007 04 29.77  24.08  26.92 
2007 05 30.75  24.69  27.72 
2007 06 31.20  24.66  27.93 
2009 07 30.74  24.68  27.71 
2009 10 31.36  25.55  28.45 
2011 03 30.30  24.56  27.43 
2011 04 29.88  24.59  27.23 
2011 11 31.83  26.19  29.01 
2011 12 31.68  26.28  28.98 
2012 01 31.06  25.69  28.37 
2012 02 30.15  24.83  27.49 
2012 03 30.15  24.56  27.35 
