Month	Percent
2004-01-31	2.16
2004-02-29	2.24
2004-03-31	2.37
2004-04-30	2.36
2004-05-31	2.52
2004-06-30	2.8
2004-07-31	2.93
2004-08-31	2.84
2004-09-30	2.91
2004-10-31	2.94
2004-11-30	3
2004-12-31	2.96
2005-01-31	2.97
2005-02-28	2.95
2005-03-31	2.96
2005-04-30	3.05
2005-05-31	3.07
2005-06-30	3.05
2005-07-31	3.01
2005-08-31	2.84
2005-09-30	2.8
2005-10-31	2.81
2005-11-30	3.08
2005-12-31	3.07
2006-01-31	3.08
2006-02-28	3.05
2006-03-31	3.05
2006-04-30	3.11
2006-05-31	2.91
2006-06-30	2.91
2006-07-31	2.89
2006-08-31	3.04
2006-09-30	3.13
2006-10-31	3.19
2006-11-30	3.28
2006-12-31	3.39
2007-01-31	3.47
2007-02-28	3.6
2007-03-31	3.69
2007-04-30	3.63
2007-05-31	3.66
2007-06-30	3.79
2007-07-31	3.87
2007-08-31	4.04
2007-09-30	4.1
2007-10-31	4.11
2007-11-30	4.16
2007-12-31	4.12
2008-01-31	4.01
2008-02-29	3.89
2008-03-31	3.73
2008-04-30	3.67
2008-05-31	3.59
2008-06-30	3.61
2008-07-31	3.63
2008-08-31	3.66
2008-09-30	3.63
2008-10-31	3.54
2008-11-30	2.73
2008-12-31	1.65
2009-01-31	1.23
2009-02-28	0.36
2009-03-31	0.31
2009-04-30	0.23
2009-05-31	0.17
2009-06-30	0.16
2009-07-31	0.29
2009-08-31	0.44
2009-09-30	0.59
2009-10-31	0.61
2009-11-30	0.72
2009-12-31	0.84
2010-01-31	0.88
2010-02-28	0.92
2010-03-31	0.98
2010-04-30	1
2010-05-31	1.04
2010-06-30	1.2
2010-07-31	1.2
2010-08-31	1.22
2010-09-30	1.29
2010-10-31	1.22
2010-11-30	1.27
2010-12-31	1.38