Year	Percent
2000-01-01	72.175
2001-01-01	70.575
2002-01-01	68.450
2003-01-01	66.175
2004-01-01	65.550
2005-01-01	61.800
2006-01-01	60.000
2007-01-01	58.975
2008-01-01	57.300
2009-01-01	56.075
2010-01-01	54.125
2011-01-01	53.050
2012-01-01	53.175
2013-01-01	51.650
2014-01-01	50.775
2015-01-01	49.925
2016-01-01	48.075
2017-01-01	46.350