Year	Percent
2005-01-01	58.625
2006-01-01	59.475
2007-01-01	60.575
2008-01-01	61.400
2009-01-01	60.825
2010-01-01	61.200
2011-01-01	62.500
2012-01-01	62.775
2013-01-01	62.750
2014-01-01	62.825
2015-01-01	62.575
2016-01-01	63.625
2017-01-01	63.925