Year	Percent
2000-01-01	59.150
2001-01-01	60.200
2002-01-01	61.375
2003-01-01	61.725
2004-01-01	62.200
2005-01-01	62.825
2006-01-01	63.500
2007-01-01	64.850
2008-01-01	65.750
2009-01-01	66.325
2010-01-01	64.850
2011-01-01	64.775
2012-01-01	65.400
2013-01-01	65.350
2014-01-01	64.625
2015-01-01	65.075
2016-01-01	65.125
2017-01-01	65.300