Year	Percent
2004-01-01	0.30
2005-01-01	0.36
2006-01-01	0.41
2007-01-01	0.56
2008-01-01	0.60
2009-01-01	0.72
2010-01-01	0.68
2011-01-01	0.73
2012-01-01	0.89
2013-01-01	1.01
2014-01-01	1.19
2015-01-01	1.36
2016-01-01	1.48