1997 07 31.79  21.52  26.65 
1997 08 31.56  22.11  26.83 
1997 09 31.28  21.27  26.27 
1997 10 31.58  21.66  26.62 
1997 11 32.25  21.78  27.02 
1997 12 31.80  21.62  26.71 
1998 01 32.25  22.18  27.21 
1998 02 32.31  22.22  27.26 
1998 03 32.84  22.15  27.50 
1998 04 33.04  21.97  27.50 
1998 05 32.18  21.70  26.94 
1998 06 31.95  21.67  26.81 
1998 07 32.11  21.55  26.83 
1998 08 31.91  21.40  26.65 
1998 09 31.81  21.61  26.71 
1998 10 31.70  21.52  26.61 
1998 11 31.67  21.51  26.59 
1998 12 31.65  21.67  26.66 
1999 01 31.50  21.56  26.53 
1999 02 31.35  21.53  26.44 
1999 03 31.48  21.61  26.54 
1999 04 31.72  21.49  26.60 
1999 05 32.41  21.79  27.10 
1999 06 31.79  21.64  26.71 
1999 07 31.81  21.53  26.67 
1999 08 31.53  21.70  26.61 
1999 09 31.59  21.47  26.53 
1999 10 31.40  21.53  26.46 
1999 11 31.65  21.78  26.71 
1999 12 31.40  21.55  26.47 
2000 01 31.42  21.62  26.52 
2000 02 31.55  21.43  26.49 
2000 03 31.56  21.52  26.54 
2000 04 31.69  21.53  26.61 
2000 05 31.98  21.75  26.86 
2000 06 31.96  21.82  26.89 
2000 07 31.46  21.65  26.55 
2000 08 31.47  21.51  26.49 
2000 09 32.32  21.97  27.14 
2000 10 31.91  21.73  26.82 
2000 11 32.04  21.74  26.89 
2001 01 31.43  21.94  26.68 
2001 03 32.59  22.37  27.48 
2001 04 32.23  21.82  27.02 
2001 05 32.36  22.21  27.28 
2001 06 32.50  21.95  27.23 
2001 07 32.30  21.77  27.03 
2001 08 32.29  22.04  27.16 
2001 09 32.68  21.91  27.30 
2001 10 31.94  21.83  26.88 
2001 11 32.02  21.65  26.83 
2001 12 31.09  21.45  26.27 
2002 01 31.73  21.95  26.84 
2002 02 31.92  21.85  26.88 
2002 03 31.89  22.08  26.98 
2002 04 32.05  21.54  26.79 
2002 05 32.25  21.94  27.09 
2002 06 32.00  22.02  27.01 
2002 07 31.79  22.00  26.89 
2002 08 31.79  21.77  26.78 
2002 09 31.98  21.84  26.91 
2002 10 31.77  22.08  26.92 
2002 11 31.70  22.04  26.87 
2002 12 31.74  22.98  27.36 
2003 01 31.62  22.41  27.01 
2003 02 31.96  22.56  27.25 
2003 03 31.88  22.15  27.01 
2003 04 31.99  22.53  27.26 
2003 05 31.99  22.99  27.49 
2003 06 31.93  22.92  27.42 
2003 07 31.56  22.59  27.07 
2003 08 32.14  22.98  27.56 
2003 09 31.82  23.68  27.75 
2003 10 31.80  23.36  27.58 
2003 11 32.06  24.17  28.11 
2003 12 31.91  24.24  28.07 
2004 01 32.37  23.69  28.03 
2004 02 31.75  23.40  27.57 
2004 03 31.68  23.52  27.60 
2004 04 31.86  23.31  27.58 
2004 05 32.25  23.90  28.07 
2004 06 31.96  24.21  28.08 
2004 07 32.25  24.15  28.20 
2004 08 31.59  23.92  27.75 
2004 09 32.18  24.25  28.22 
2004 11 32.43  24.84  28.64 
2005 02 32.20  25.09  28.64 
2005 03 32.21  24.90  28.55 
2005 05 32.11  25.06  28.58 
2005 06 32.20  25.35  28.77 
2005 07 32.39  25.48  28.93 
2005 08 32.20  25.21  28.70 
2005 09 32.20  25.03  28.61 
2005 10 32.53  25.35  28.93 
2005 11 32.07  25.39  28.73 
2005 12 31.82  25.29  28.55 
2006 01 31.33  25.13  28.23 
2006 02 32.38  25.64  29.01 
2006 03 32.13  25.81  28.97 
2006 05 32.09  25.54  28.82 
2006 06 32.13  25.22  28.67 
2006 07 31.69  24.39  28.04 
2006 08 32.24  24.71  28.47 
2006 09 32.47  25.28  28.87 
2006 10 31.96  25.20  28.58 
2006 12 32.09  25.35  28.72 
2007 01 31.93  25.27  28.60 
2007 02 32.55  25.69  29.12 
2007 03 32.24  25.35  28.79 
2007 04 32.18  25.30  28.74 
2007 05 32.18  25.68  28.93 
2007 08 32.36  25.44  28.90 
2007 09 32.20  25.07  28.63 
2007 10 31.97  25.16  28.56 
2007 11 31.73  24.82  28.27 
2007 12 31.75  24.87  28.31 
2008 01 32.18  25.05  28.61 
2008 02 32.27  25.24  28.75 
2008 03 32.25  24.91  28.58 
2008 04 31.84  24.94  28.39 
2008 05 31.80  24.82  28.31 
2008 06 31.78  24.80  28.29 
2008 07 31.91  25.02  28.46 
2008 08 32.16  24.96  28.56 
2008 09 31.52  24.48  28.00 
2008 10 31.89  24.67  28.28 
2009 01 32.16  25.15  28.65 
2009 02 32.00  24.94  28.47 
2009 03 31.88  24.81  28.34 
2009 04 32.00  25.30  28.65 
2009 05 31.91  24.75  28.33 
2009 06 32.50  25.71  29.10 
2009 07 31.82  25.05  28.43 
2009 08 32.50  25.30  28.90 
2009 09 31.67  24.68  28.17 
2009 10 32.25  24.93  28.59 
2009 11 31.94  25.07  28.50 
2009 12 31.92  25.04  28.48 
2010 02 32.71  25.38  29.04 
2010 03 32.24  25.24  28.74 
2010 04 31.98  25.09  28.53 
2010 05 32.43  25.30  28.87 
2010 06 32.90  25.52  29.21 
2010 07 32.36  25.27  28.81 
2010 08 32.24  25.08  28.66 
2010 09 32.65  25.08  28.86 
2010 12 32.18  25.10  28.64 
2011 01 32.22  25.19  28.70 
2011 02 32.27  25.02  28.64 
2011 06 31.64  24.57  28.10 
2011 09 32.16  25.11  28.64 
2011 10 32.16  25.09  28.63 
2011 11 32.09  24.89  28.49 
2011 12 31.43  24.45  27.94 
2012 01 32.68  25.17  28.92 
2012 02 31.84  24.79  28.31 
2012 03 32.47  25.41  28.94 
2012 04 32.53  25.30  28.91 
2012 05 32.24  24.91  28.57 
2012 06 32.41  24.94  28.67 
