Month	Percent
2004-01-31	5.14
2004-02-29	5.45
2004-03-31	5.23
2004-04-30	5.45
2004-05-31	5.61
2004-06-30	5.74
2004-07-31	5.78
2004-08-31	5.81
2004-09-30	5.67
2004-10-31	5.78
2004-11-30	5.76
2004-12-31	6.03
2005-01-31	6.02
2005-02-28	6.07
2005-03-31	5.89
2005-04-30	5.86
2005-05-31	5.9
2005-06-30	6.08
2005-07-31	5.29
2005-08-31	5.64
2005-09-30	5.68
2005-10-31	5.54
2005-11-30	5.46
2005-12-31	5.63
2006-01-31	5.48
2006-02-28	5.58
2006-03-31	5.62
2006-04-30	5.59
2006-05-31	5.68
2006-06-30	5.79
2006-07-31	5.67
2006-08-31	5.94
2006-09-30	6.01
2006-10-31	6.07
2006-11-30	6.21
2006-12-31	6.34
2007-01-31	6.2
2007-02-28	6.18
2007-03-31	6.21
2007-04-30	6.54
2007-05-31	6.97
2007-06-30	6.72
2007-07-31	7.42
2007-08-31	7.89
2007-09-30	7.11
2007-10-31	7.03
2007-11-30	6.75
2007-12-31	6.91
2008-01-31	6.53
2008-02-29	6.23
2008-03-31	6.31
2008-04-30	6.44
2008-05-31	6.02
2008-06-30	6.04
2008-07-31	6.05
2008-08-31	6.06
2008-09-30	6.43
2008-10-31	6.54
2008-11-30	5.22
2008-12-31	3.49
2009-01-31	2.94
2009-02-28	2.5
2009-03-31	2.5
2009-04-30	2.7
2009-05-31	2.48
2009-06-30	2.06
2009-07-31	2
2009-08-31	1.79
2009-09-30	2.19
2009-10-31	2.02
2009-11-30	2.72
2009-12-31	2.32
2010-01-31	2.17
2010-02-28	2.24
2010-03-31	2.59
2010-04-30	2.18
2010-05-31	2
2010-06-30	1.92
2010-07-31	2.32
2010-08-31	1.85
2010-09-30	1.92
2010-10-31	2.03
2010-11-30	2.17
2010-12-31	1.79
2011-01-31	2.18
2011-02-28	2.1
2011-03-31	1.98
2011-04-30	2.36
2011-05-31	2.12
2011-06-30	2.4
2011-07-31	2.26
2011-08-31	2.19
2011-09-30	2.24
2011-10-31	2.45
2011-11-30	1.98
2011-12-31	2.79
2012-01-31	2.27
2012-02-29	2.05
2012-03-31	2.16
2012-04-30	2.8
2012-05-31	2.45
2012-06-30	2.47
2012-07-31	2.29
2012-08-31	2.3
2012-09-30	2.44
2012-10-31	2.84
2012-11-30	2.42
2012-12-31	2.37
2013-01-31	2.55
2013-02-28	2.28
2013-03-31	2.22
2013-04-30	2.46
2013-05-31	2.33
2013-06-30	1.8
2013-07-31	2.48
2013-08-31	2.38
2013-09-30	1.83
2013-10-31	2.21
2013-11-30	2.11
2013-12-31	1.77
2014-01-31	2.36
2014-02-28	2.56
2014-03-31	2.19
2014-04-30	2.76
2014-05-31	2.54
2014-06-30	2.7
2014-07-31	2.26
2014-08-31	2.26
2014-09-30	2.26
2014-10-31	2.52
2014-11-30	2.72
2014-12-31	2.31
2015-01-31	2.11
2015-02-28	1.92
2015-03-31	2
2015-04-30	2.27
2015-05-31	1.82
2015-06-30	2.09
2015-07-31	2.14
2015-08-31	2.1
2015-09-30	2.2
2015-10-31	2.17
2015-11-30	2.06
2015-12-31	2.45