Year	Percent
2006-01-01	64.400
2007-01-01	64.300
2008-01-01	64.200
2009-01-01	62.450
2010-01-01	64.450
2011-01-01	66.900
2012-01-01	66.775
2013-01-01	67.125
2014-01-01	66.950
2015-01-01	67.125
2016-01-01	67.275
2017-01-01	67.750