Year	Percent
2003-01-01	53.500
2004-01-01	55.800
2005-01-01	57.000
2006-01-01	58.200
2007-01-01	58.875
2008-01-01	58.725
2009-01-01	60.700
2010-01-01	60.300
2011-01-01	60.725
2012-01-01	62.725
2013-01-01	63.175
2014-01-01	64.200
2015-01-01	65.625
2016-01-01	64.700
2017-01-01	66.150