Year	Percent
2003-01-01	61.950
2004-01-01	61.875
2005-01-01	61.925
2006-01-01	61.900
2007-01-01	61.600
2008-01-01	61.475
2009-01-01	60.450
2010-01-01	61.075
2011-01-01	62.075
2012-01-01	62.575
2013-01-01	62.625
2014-01-01	63.525
2015-01-01	62.950
2016-01-01	63.050
2017-01-01	63.100