Month	Percent
2004-01-31	5.38
2004-02-29	5.51
2004-03-31	5.49
2004-04-30	5.49
2004-05-31	5.52
2004-06-30	5.6
2004-07-31	5.73
2004-08-31	5.8
2004-09-30	5.89
2004-10-31	5.86
2004-11-30	5.9
2004-12-31	5.83
2005-01-31	5.78
2005-02-28	5.7
2005-03-31	5.62
2005-04-30	5.57
2005-05-31	5.56
2005-06-30	5.57
2005-07-31	5.42
2005-08-31	5.25
2005-09-30	5.01
2005-10-31	5.1
2005-11-30	5.09
2005-12-31	5.12
2006-01-31	5.19
2006-02-28	5.24
2006-03-31	5.17
2006-04-30	5.08
2006-05-31	5.05
2006-06-30	5.12
2006-07-31	5.22
2006-08-31	5.41
2006-09-30	5.42
2006-10-31	5.39
2006-11-30	5.42
2006-12-31	5.45
2007-01-31	5.44
2007-02-28	5.54
2007-03-31	5.61
2007-04-30	5.61
2007-05-31	5.66
2007-06-30	5.77
2007-07-31	5.82
2007-08-31	6.01
2007-09-30	6
2007-10-31	6.04
2007-11-30	6.02
2007-12-31	6.03
2008-01-31	5.99
2008-02-29	5.95
2008-03-31	5.89
2008-04-30	5.81
2008-05-31	5.78
2008-06-30	5.81
2008-07-31	6.02
2008-08-31	6.12
2008-09-30	6.15
2008-10-31	6.06
2008-11-30	6.15
2008-12-31	6.1
2009-01-31	5.89
2009-02-28	5.55
2009-03-31	5.72
2009-04-30	5.58
2009-05-31	5.49
2009-06-30	5.5
2009-07-31	5.52
2009-08-31	5.55
2009-09-30	5.43
2009-10-31	5.61
2009-11-30	5.62
2009-12-31	5.68
2010-01-31	5.66
2010-02-28	5.53
2010-03-31	5.47
2010-04-30	5.6
2010-05-31	5.51
2010-06-30	5.31
2010-07-31	5.02
2010-08-31	4.87
2010-09-30	4.76
2010-10-31	5.12
2010-11-30	5.22
2010-12-31	5.37
2011-01-31	5.21
2011-02-28	5.18
2011-03-31	5.16
2011-04-30	5.32
2011-05-31	5.33
2011-06-30	5.31
2011-07-31	5.18
2011-08-31	4.81
2011-09-30	4.49
2011-10-31	4.24
2011-11-30	4.01
2011-12-31	4.23
2012-01-31	4.29
2012-02-29	4.35
2012-03-31	4.62
2012-04-30	4.4
2012-05-31	4.37
2012-06-30	4.48
2012-07-31	4.56
2012-08-31	4.93
2012-09-30	4.45
2012-10-31	4.24
2012-11-30	4.3
2012-12-31	4.17
2013-01-31	4.06
2013-02-28	4.19
2013-03-31	4.14
2013-04-30	4.24
2013-05-31	4.21
2013-06-30	4.08
2013-07-31	3.85
2013-08-31	4
2013-09-30	3.83
2013-10-31	3.91
2013-11-30	3.85
2013-12-31	3.99
2014-01-31	4.04
2014-02-28	4.08
2014-03-31	3.94
2014-04-30	3.93
2014-05-31	3.97
2014-06-30	3.85
2014-07-31	3.93
2014-08-31	3.97
2014-09-30	3.87
2014-10-31	3.93
2014-11-30	3.93
2014-12-31	3.77
2015-01-31	3.69
2015-02-28	3.56
2015-03-31	3.26
2015-04-30	3.19
2015-05-31	3.08
2015-06-30	3.08
2015-07-31	3.1
2015-08-31	3.08
2015-09-30	3.11
2015-10-31	3.17
2015-11-30	3.1
2015-12-31	3.17