Month	Percent
2004-01-31	4.67
2004-02-29	5.16
2004-03-31	5
2004-04-30	5.32
2004-05-31	5.5
2004-06-30	5.7
2004-07-31	5.43
2004-08-31	5.57
2004-09-30	5.75
2004-10-31	5.66
2004-11-30	5.65
2004-12-31	5.97
2005-01-31	5.75
2005-02-28	5.68
2005-03-31	5.81
2005-04-30	5.74
2005-05-31	5.79
2005-06-30	5.78
2005-07-31	5.17
2005-08-31	5.71
2005-09-30	5.72
2005-10-31	5.47
2005-11-30	5.38
2005-12-31	5.52
2006-01-31	5.37
2006-02-28	5.3
2006-03-31	5.48
2006-04-30	5.3
2006-05-31	5.44
2006-06-30	5.56
2006-07-31	5.51
2006-08-31	5.69
2006-09-30	5.79
2006-10-31	5.84
2006-11-30	5.86
2006-12-31	6.09
2007-01-31	6.35
2007-02-28	6.19
2007-03-31	6.25
2007-04-30	6.55
2007-05-31	6.84
2007-06-30	6.69
2007-07-31	7.22
2007-08-31	7.55
2007-09-30	7.18
2007-10-31	6.82
2007-11-30	6.75
2007-12-31	6.86
2008-01-31	6.34
2008-02-29	6.2
2008-03-31	6.28
2008-04-30	6.27
2008-05-31	5.94
2008-06-30	6.04
2008-07-31	6.05
2008-08-31	6.03
2008-09-30	6.35
2008-10-31	6.52
2008-11-30	4.85
2008-12-31	3.53
2009-01-31	2.9
2009-02-28	2.57
2009-03-31	2.35
2009-04-30	2.39
2009-05-31	2.13
2009-06-30	2.24
2009-07-31	2.22
2009-08-31	1.97
2009-09-30	2.23
2009-10-31	2.29
2009-11-30	2.31
2009-12-31	2.43
2010-01-31	2.44
2010-02-28	2.38
2010-03-31	2.63
2010-04-30	2.5
2010-05-31	2.32
2010-06-30	2.32
2010-07-31	2.47
2010-08-31	2.23
2010-09-30	2.29
2010-10-31	2.37
2010-11-30	2.27
2010-12-31	2.43
2011-01-31	2.3
2011-02-28	2.37
2011-03-31	2.32
2011-04-30	2.47
2011-05-31	2.37
2011-06-30	2.52
2011-07-31	2.37
2011-08-31	2.37
2011-09-30	2.45
2011-10-31	2.55
2011-11-30	2.25
2011-12-31	2.93
2012-01-31	2.6
2012-02-29	2.34
2012-03-31	2.44
2012-04-30	2.77
2012-05-31	2.48
2012-06-30	2.78
2012-07-31	2.49
2012-08-31	2.4
2012-09-30	2.5
2012-10-31	2.79
2012-11-30	2.52
2012-12-31	2.46
2013-01-31	2.7
2013-02-28	2.29
2013-03-31	2.39
2013-04-30	2.56
2013-05-31	2.41
2013-06-30	2.03
2013-07-31	2.39
2013-08-31	2.43
2013-09-30	2.21
2013-10-31	2.38
2013-11-30	2.3
2013-12-31	2.04
2014-01-31	2.57
2014-02-28	2.39
2014-03-31	2.3
2014-04-30	2.75
2014-05-31	2.49
2014-06-30	2.69
2014-07-31	2.35
2014-08-31	2.55
2014-09-30	2.38
2014-10-31	2.3
2014-11-30	2.3
2014-12-31	2.32
2015-01-31	2.4
2015-02-28	1.99
2015-03-31	2.14
2015-04-30	2.38
2015-05-31	2.29
2015-06-30	2.52
2015-07-31	2.38
2015-08-31	2.34
2015-09-30	2.43
2015-10-31	2.51
2015-11-30	2.47
2015-12-31	2.77