Month	Percent
2004-01-31	4.73
2004-02-29	4.76
2004-03-31	4.77
2004-04-30	4.78
2004-05-31	4.78
2004-06-30	4.79
2004-07-31	4.82
2004-08-31	4.87
2004-09-30	4.89
2004-10-31	4.88
2004-11-30	4.91
2004-12-31	4.93
2005-01-31	4.95
2005-02-28	4.99
2005-03-31	4.98
2005-04-30	4.99
2005-05-31	4.99
2005-06-30	5.01
2005-07-31	5.05
2005-08-31	5.07
2005-09-30	5.1
2005-10-31	5.07
2005-11-30	5.08
2005-12-31	5.06
2006-01-31	5.03
2006-02-28	5.04
2006-03-31	5
2006-04-30	5
2006-05-31	5
2006-06-30	5
2006-07-31	4.98
2006-08-31	5
2006-09-30	5.01
2006-10-31	4.99
2006-11-30	5.01
2006-12-31	5.02
2007-01-31	5.01
2007-02-28	5.05
2007-03-31	5.05
2007-04-30	5.07
2007-05-31	5.1
2007-06-30	5.17
2007-07-31	5.17
2007-08-31	5.21
2007-09-30	5.2
2007-10-31	5.25
2007-11-30	5.3
2007-12-31	5.32
2008-01-31	5.35
2008-02-29	5.4
2008-03-31	5.44
2008-04-30	5.47
2008-05-31	5.51
2008-06-30	5.55
2008-07-31	5.58
2008-08-31	5.62
2008-09-30	5.67
2008-10-31	5.69
2008-11-30	5.72
2008-12-31	5.73
2009-01-31	5.73
2009-02-28	5.74
2009-03-31	5.72
2009-04-30	5.73
2009-05-31	5.66
2009-06-30	5.67
2009-07-31	5.59
2009-08-31	5.55
2009-09-30	5.52
2009-10-31	5.45
2009-11-30	5.44
2009-12-31	5.39
2010-01-31	5.37
2010-02-28	5.35
2010-03-31	5.32
2010-04-30	5.3
2010-05-31	5.28
2010-06-30	5.25
2010-07-31	5.21
2010-08-31	5.18
2010-09-30	5.15
2010-10-31	5.11
2010-11-30	5.11
2010-12-31	5.06
2011-01-31	5.06
2011-02-28	5.05
2011-03-31	5.03
2011-04-30	5
2011-05-31	4.98
2011-06-30	4.97
2011-07-31	4.94
2011-08-31	4.9
2011-09-30	4.87
2011-10-31	4.83
2011-11-30	4.77
2011-12-31	4.73
2012-01-31	4.7
2012-02-29	4.67
2012-03-31	4.63
2012-04-30	4.58
2012-05-31	4.56
2012-06-30	4.53
2012-07-31	4.5
2012-08-31	4.48
2012-09-30	4.47
2012-10-31	4.42
2012-11-30	4.4
2012-12-31	4.36
2013-01-31	4.34
2013-02-28	4.31
2013-03-31	4.27
2013-04-30	4.2
2013-05-31	4.19
2013-06-30	4.15
2013-07-31	4.08
2013-08-31	4.03
2013-09-30	3.95
2013-10-31	3.89
2013-11-30	3.84
2013-12-31	3.79
2014-01-31	3.75
2014-02-28	3.71
2014-03-31	3.68
2014-04-30	3.63
2014-05-31	3.59
2014-06-30	3.55
2014-07-31	3.52
2014-08-31	3.49
2014-09-30	3.46
2014-10-31	3.44
2014-11-30	3.42
2014-12-31	3.4
2015-01-31	3.39
2015-02-28	3.36
2015-03-31	3.33
2015-04-30	3.3
2015-05-31	3.28
2015-06-30	3.24
2015-07-31	3.21
2015-08-31	3.18
2015-09-30	3.14
2015-10-31	3.11
2015-11-30	3.08
2015-12-31	3.05