Year	Percent
2003-01-01	66.300
2004-01-01	65.600
2005-01-01	65.900
2006-01-01	63.200
2007-01-01	63.900
2008-01-01	64.450
2009-01-01	66.275
2010-01-01	66.150
2011-01-01	65.325
2012-01-01	65.900
2013-01-01	65.850
2014-01-01	65.825
2015-01-01	65.350
2016-01-01	64.400
2017-01-01	63.325