Year	Percent
2006-01-01	57.425
2007-01-01	57.525
2008-01-01	58.250
2009-01-01	59.425
2010-01-01	61.075
2011-01-01	62.300
2012-01-01	62.825
2013-01-01	63.975
2014-01-01	64.425
2015-01-01	65.450
2016-01-01	66.475
2017-01-01	67.525