Month	Percent
2004-01-31	5.46
2004-02-29	5.69
2004-03-31	5.5
2004-04-30	5.69
2004-05-31	5.77
2004-06-30	5.94
2004-07-31	6
2004-08-31	5.94
2004-09-30	6.6
2004-10-31	6.59
2004-11-30	6.26
2004-12-31	6.47
2005-01-31	6.55
2005-02-28	6.29
2005-03-31	6.45
2005-04-30	6.49
2005-05-31	6.61
2005-06-30	6.55
2005-07-31	6.35
2005-08-31	6.58
2005-09-30	6.69
2005-10-31	6.47
2005-11-30	6.45
2005-12-31	6.31
2006-01-31	5.74
2006-02-28	5.9
2006-03-31	5.86
2006-04-30	5.89
2006-05-31	5.89
2006-06-30	5.79
2006-07-31	6.21
2006-08-31	6.52
2006-09-30	6.49
2006-10-31	6.51
2006-11-30	6.66
2006-12-31	6.71
2007-01-31	7.04
2007-02-28	7.32
2007-03-31	6.76
2007-04-30	6.97
2007-05-31	7.12
2007-06-30	6.07
2007-07-31	7.5
2007-08-31	7.79
2007-09-30	7.58
2007-10-31	7.64
2007-11-30	7.42
2007-12-31	7.43
2008-01-31	7.14
2008-02-29	7.11
2008-03-31	7.05
2008-04-30	6.95
2008-05-31	6.83
2008-06-30	6.89
2008-07-31	6.87
2008-08-31	6.78
2008-09-30	7.04
2008-10-31	6.91
2008-11-30	5.65
2008-12-31	4.48
2009-01-31	3.89
2009-02-28	3.64
2009-03-31	3.29
2009-04-30	3.31
2009-05-31	3.31
2009-06-30	3.23
2009-07-31	3.24
2009-08-31	3.18
2009-09-30	3.15
2009-10-31	3.2
2009-11-30	3.24
2009-12-31	3.12
2010-01-31	3.37
2010-02-28	3.43
2010-03-31	3.36
2010-04-30	3.41
2010-05-31	3.36
2010-06-30	3.53
2010-07-31	3.42
2010-08-31	3.52
2010-09-30	3.45
2010-10-31	3.44
2010-11-30	3.58
2010-12-31	3.47
2011-01-31	3.73
2011-02-28	3.87
2011-03-31	3.76
2011-04-30	3.72
2011-05-31	3.72
2011-06-30	3.76
2011-07-31	3.78
2011-08-31	3.59
2011-09-30	3.77
2011-10-31	3.76
2011-11-30	3.92
2011-12-31	3.79
2012-01-31	3.89
2012-02-29	4.05
2012-03-31	3.89
2012-04-30	3.8
2012-05-31	3.99
2012-06-30	3.89
2012-07-31	3.87
2012-08-31	3.86
2012-09-30	3.82
2012-10-31	3.82
2012-11-30	3.8
2012-12-31	3.65
2013-01-31	3.79
2013-02-28	3.85
2013-03-31	3.77
2013-04-30	3.84
2013-05-31	3.75
2013-06-30	3.71
2013-07-31	3.95
2013-08-31	3.69
2013-09-30	3.84
2013-10-31	3.89
2013-11-30	3.76
2013-12-31	3.57
2014-01-31	3.69
2014-02-28	3.79
2014-03-31	3.7
2014-04-30	3.65
2014-05-31	3.69
2014-06-30	3.76
2014-07-31	3.68
2014-08-31	3.54
2014-09-30	3.66
2014-10-31	3.62
2014-11-30	3.55
2014-12-31	3.51
2015-01-31	3.5
2015-02-28	3.53
2015-03-31	3.56
2015-04-30	3.49
2015-05-31	3.49
2015-06-30	3.58
2015-07-31	3.47
2015-08-31	3.56
2015-09-30	3.59
2015-10-31	3.55
2015-11-30	3.53
2015-12-31	3.53