Month	Percent
2004-01-31	6.02
2004-02-29	6.26
2004-03-31	6.33
2004-04-30	6.13
2004-05-31	6.52
2004-06-30	6.58
2004-07-31	6.66
2004-08-31	6.7
2004-09-30	6.79
2004-10-31	6.77
2004-11-30	6.76
2004-12-31	6.8
2005-01-31	6.67
2005-02-28	6.68
2005-03-31	6.65
2005-04-30	6.72
2005-05-31	6.65
2005-06-30	6.63
2005-07-31	6.53
2005-08-31	6.5
2005-09-30	6.46
2005-10-31	6.31
2005-11-30	6.39
2005-12-31	6.29
2006-01-31	6.38
2006-02-28	6.26
2006-03-31	6.24
2006-04-30	6.21
2006-05-31	6.21
2006-06-30	6.17
2006-07-31	6.15
2006-08-31	6.16
2006-09-30	6.18
2006-10-31	6.17
2006-11-30	6.18
2006-12-31	6.16
2007-01-31	6.16
2007-02-28	6.24
2007-03-31	6.16
2007-04-30	6.16
2007-05-31	6.15
2007-06-30	6.18
2007-07-31	6.22
2007-08-31	6.42
2007-09-30	6.64
2007-10-31	6.64
2007-11-30	6.62
2007-12-31	6.57
2008-01-31	6.51
2008-02-29	6.59
2008-03-31	6.52
2008-04-30	6.39
2008-05-31	6.49
2008-06-30	6.41
2008-07-31	6.38
2008-08-31	6.5
2008-09-30	6.5
2008-10-31	6.41
2008-11-30	6.3
2008-12-31	6.02
2009-01-31	5.79
2009-02-28	5.46
2009-03-31	5.26
2009-04-30	5.05
2009-05-31	4.98
2009-06-30	4.99
2009-07-31	5.05
2009-08-31	5.16
2009-09-30	5.06
2009-10-31	5.1
2009-11-30	5.04
2009-12-31	5.06
2010-01-31	5.22
2010-02-28	5.22
2010-03-31	5.23
2010-04-30	5.29
2010-05-31	5.19
2010-06-30	5.2
2010-07-31	5.17
2010-08-31	5.19
2010-09-30	5.2
2010-10-31	5.21
2010-11-30	5.21
2010-12-31	5.21
2011-01-31	5.26
2011-02-28	5.31
2011-03-31	5.22
2011-04-30	5.24
2011-05-31	5.3
2011-06-30	5.29
2011-07-31	5.34
2011-08-31	5.36
2011-09-30	5.35
2011-10-31	5.31
2011-11-30	5.33
2011-12-31	5.3
2012-01-31	5.3
2012-02-29	5.33
2012-03-31	5.33
2012-04-30	5.3
2012-05-31	5.31
2012-06-30	5.3
2012-07-31	5.29
2012-08-31	5.26
2012-09-30	5.28
2012-10-31	5.28
2012-11-30	5.29
2012-12-31	5.31
2013-01-31	5.27
2013-02-28	5.29
2013-03-31	5.26
2013-04-30	5.25
2013-05-31	5.25
2013-06-30	5.22
2013-07-31	5.27
2013-08-31	5.33
2013-09-30	5.3
2013-10-31	5.27
2013-11-30	5.32
2013-12-31	5.33
2014-01-31	5.3
2014-02-28	5.32
2014-03-31	5.26
2014-04-30	5.2
2014-05-31	5.23
2014-06-30	5.23
2014-07-31	5.22
2014-08-31	5.22
2014-09-30	5.24
2014-10-31	5.25
2014-11-30	5.23
2014-12-31	5.22
2015-01-31	5.11
2015-02-28	5.2
2015-03-31	5.17
2015-04-30	5.26
2015-05-31	5.27
2015-06-30	5.29
2015-07-31	5.32
2015-08-31	5.33
2015-09-30	5.32
2015-10-31	5.27
2015-11-30	5.26
2015-12-31	5.26