Year	Percent
2000-01-01	64.725
2001-01-01	65.000
2002-01-01	65.225
2003-01-01	65.300
2004-01-01	65.600
2005-01-01	65.850
2006-01-01	65.775
2007-01-01	65.475
2008-01-01	65.725
2009-01-01	64.925
2010-01-01	64.475
2011-01-01	64.400
2012-01-01	64.950
2013-01-01	65.775
2014-01-01	67.050
2015-01-01	67.925
2016-01-01	68.775
2017-01-01	69.725