Year	Percent
2005-01-01	45.475
2006-01-01	48.150
2007-01-01	51.300
2008-01-01	53.750
2009-01-01	56.075
2010-01-01	57.800
2011-01-01	60.025
2012-01-01	61.600
2013-01-01	63.600
2014-01-01	65.550
2015-01-01	66.175
2016-01-01	68.575
2017-01-01	70.150