Year	Percent
2005-01-01	66.150
2006-01-01	66.325
2007-01-01	66.250
2008-01-01	66.300
2009-01-01	66.200
2010-01-01	66.075
2011-01-01	66.550
2012-01-01	66.450
2013-01-01	66.400
2014-01-01	66.325
2015-01-01	65.850
2016-01-01	66.575
2017-01-01	66.700