Year	Percent
2005-01-01	63.450
2006-01-01	64.400
2007-01-01	65.275
2008-01-01	65.750
2009-01-01	64.450
2010-01-01	64.125
2011-01-01	64.175
2012-01-01	64.075
2013-01-01	64.050
2014-01-01	64.750
2015-01-01	65.600
2016-01-01	66.575
2017-01-01	67.675