Month	Percent
1999-01-31	7.08
1999-02-28	6.74
1999-03-31	6.44
1999-04-30	6.22
1999-05-31	6.19
1999-06-30	6.09
1999-07-31	6.02
1999-08-31	6.08
1999-09-30	5.98
1999-10-31	5.2
1999-11-30	5.84
1999-12-31	5.95
2000-01-31	6.09
2000-02-29	6.29
2000-03-31	6.18
2000-04-30	6.19
2000-05-31	6.44
2000-06-30	6.38
2000-07-31	6.45
2000-08-31	6.31
2000-09-30	6.37
2000-10-31	6.36
2000-11-30	6.33
2000-12-31	6.16
2001-01-31	6.25
2001-02-28	6.12
2001-03-31	5.77
2001-04-30	5.65
2001-05-31	5.62
2001-06-30	5.44
2001-07-31	5.3
2001-08-31	5.22
2001-09-30	4.97
2001-10-31	4.82
2001-11-30	4.51
2001-12-31	4.33
2002-01-31	4.36
2002-02-28	4.26
2002-03-31	4.34
2002-04-30	4.36
2002-05-31	4.33
2002-06-30	4.25
2002-07-31	4.21
2002-08-31	4.16
2002-09-30	4.15
2002-10-31	4.12
2002-11-30	4.1
2002-12-31	4.09
2003-01-31	4.12
2003-02-28	3.99
2003-03-31	4.15
2003-04-30	3.74
2003-05-31	3.86
2003-06-30	3.89
2003-07-31	3.61
2003-08-31	3.78
2003-09-30	3.9
2003-10-31	3.89
2003-11-30	3.83
2003-12-31	3.98
2004-01-31	4.28
2004-02-29	4.13
2004-03-31	4.17
2004-04-30	4.21
2004-05-31	4.34
2004-06-30	4.5
2004-07-31	4.67
2004-08-31	4.7
2004-09-30	4.89
2004-10-31	4.95
2004-11-30	4.92
2004-12-31	4.88
2005-01-31	4.81
2005-02-28	4.79
2005-03-31	4.82
2005-04-30	4.8
2005-05-31	4.77
2005-06-30	4.87
2005-07-31	4.82
2005-08-31	4.72
2005-09-30	4.67
2005-10-31	4.69
2005-11-30	4.64
2005-12-31	4.64
2006-01-31	4.66
2006-02-28	4.64
2006-03-31	4.6
2006-04-30	4.61
2006-05-31	4.6
2006-06-30	4.65
2006-07-31	4.65
2006-08-31	4.77
2006-09-30	4.76
2006-10-31	4.83
2006-11-30	4.95
2006-12-31	4.99
2007-01-31	5.16
2007-02-28	5.32
2007-03-31	5.34
2007-04-30	5.37
2007-05-31	5.39
2007-06-30	5.39
2007-07-31	5.65
2007-08-31	5.72
2007-09-30	5.8
2007-10-31	5.97
2007-11-30	5.9
2007-12-31	5.98
2008-01-31	5.96
2008-02-29	5.64
2008-03-31	5.74
2008-04-30	5.61
2008-05-31	5.45
2008-06-30	5.26
2008-07-31	5.29
2008-08-31	5.28
2008-09-30	5.35
2008-10-31	5.67
2008-11-30	4.93
2008-12-31	3.01
2009-01-31	2.56
2009-02-28	1.93
2009-03-31	1.46
2009-04-30	0.99
2009-05-31	0.89
2009-06-30	0.91
2009-07-31	1.02
2009-08-31	1.18
2009-09-30	0.97
2009-10-31	0.8
2009-11-30	1.04
2009-12-31	1.02