Year	Percent
2005-01-01	1.5161600000000000
2006-01-01	1.7609200000000000
2007-01-01	2.1519800000000000
2008-01-01	2.9397000000000000
2009-01-01	3.5210199999999996
2010-01-01	3.1181799999999997
2011-01-01	3.1384200000000000
2012-01-01	3.2079500000000000
2013-01-01	3.3717099999999998
2014-01-01	3.5646100000000000
2015-01-01	4.3574400000000000
2016-01-01	5.3657000000000000