Month	Percent
2004-01-31	5.64
2004-02-29	5.78
2004-03-31	5.8
2004-04-30	5.77
2004-05-31	5.85
2004-06-30	6.03
2004-07-31	6.1
2004-08-31	6.24
2004-09-30	6.25
2004-10-31	6.37
2004-11-30	6.36
2004-12-31	6.29
2005-01-31	6.31
2005-02-28	6.06
2005-03-31	5.91
2005-04-30	5.94
2005-05-31	5.97
2005-06-30	5.88
2005-07-31	5.74
2005-08-31	5.62
2005-09-30	5.53
2005-10-31	5.52
2005-11-30	5.53
2005-12-31	5.49
2006-01-31	5.5
2006-02-28	5.49
2006-03-31	5.37
2006-04-30	5.29
2006-05-31	5.3
2006-06-30	5.38
2006-07-31	5.47
2006-08-31	5.62
2006-09-30	5.58
2006-10-31	5.58
2006-11-30	5.61
2006-12-31	5.63
2007-01-31	5.69
2007-02-28	5.71
2007-03-31	5.73
2007-04-30	5.72
2007-05-31	5.76
2007-06-30	5.85
2007-07-31	5.97
2007-08-31	6.17
2007-09-30	6.18
2007-10-31	6.15
2007-11-30	6.08
2007-12-31	6.08
2008-01-31	6.06
2008-02-29	6.06
2008-03-31	6.01
2008-04-30	5.94
2008-05-31	5.93
2008-06-30	5.97
2008-07-31	6.12
2008-08-31	6.22
2008-09-30	6.21
2008-10-31	6.07
2008-11-30	6.04
2008-12-31	5.97
2009-01-31	5.8
2009-02-28	5.88
2009-03-31	5.24
2009-04-30	5.33
2009-05-31	5.03
2009-06-30	5.02
2009-07-31	5.09
2009-08-31	5.2
2009-09-30	5.45
2009-10-31	5.35
2009-11-30	4.65
2009-12-31	5.96
2010-01-31	5.95
2010-02-28	5.88
2010-03-31	5.69
2010-04-30	5.59
2010-05-31	5.46
2010-06-30	5.46
2010-07-31	5.49
2010-08-31	5.44
2010-09-30	5.43
2010-10-31	5.41
2010-11-30	5.34
2010-12-31	5.51
2011-01-31	5.44
2011-02-28	5.57
2011-03-31	5.5
2011-04-30	5.47
2011-05-31	5.41
2011-06-30	5.34
2011-07-31	5.64
2011-08-31	5.31
2011-09-30	5.11
2011-10-31	4.42
2011-11-30	4.47
2011-12-31	5.37
2012-01-31	4.92
2012-02-29	4.87
2012-03-31	5.49
2012-04-30	5.58
2012-05-31	5.57
2012-06-30	5.42
2012-07-31	5.43
2012-08-31	5.48
2012-09-30	5.53
2012-10-31	5.4
2012-11-30	5.42
2012-12-31	5.48
2013-01-31	5.37
2013-02-28	5.31
2013-03-31	5.2
2013-04-30	4.9
2013-05-31	4.5
2013-06-30	4.15
2013-07-31	3.45
2013-08-31	4.11
2013-09-30	4.09
2013-10-31	4.11
2013-11-30	4.12
2013-12-31	4.18
2014-01-31	4.09
2014-02-28	4.14
2014-03-31	3.9
2014-04-30	3.89
2014-05-31	4.37
2014-06-30	4.15
2014-07-31	4.17
2014-08-31	4.11
2014-09-30	4.14
2014-10-31	4.14
2014-11-30	4.16
2014-12-31	4.14
2015-01-31	4.1
2015-02-28	4.12
2015-03-31	4.09
2015-04-30	4.1
2015-05-31	4.12
2015-06-30	4.11
2015-07-31	4.31
2015-08-31	4.24
2015-09-30	4.2
2015-10-31	4.06
2015-11-30	4.1
2015-12-31	4.02