Year	Percent
2003-01-01	62.200
2004-01-01	62.500
2005-01-01	63.600
2006-01-01	63.600
2007-01-01	64.150
2008-01-01	63.425
2009-01-01	65.200
2010-01-01	65.200
2011-01-01	64.625
2012-01-01	65.850
2013-01-01	65.725
2014-01-01	66.625
2015-01-01	66.150
2016-01-01	65.575
2017-01-01	66.275