Year	Percent
2005-01-01	59.575
2006-01-01	61.450
2007-01-01	63.175
2008-01-01	64.300
2009-01-01	65.150
2010-01-01	66.200
2011-01-01	67.825
2012-01-01	68.100
2013-01-01	68.950
2014-01-01	69.475
2015-01-01	69.925
2016-01-01	70.800
2017-01-01	71.475