Year	Percent
2000-01-01	59.550
2001-01-01	59.950
2002-01-01	60.050
2003-01-01	60.250
2004-01-01	60.800
2005-01-01	61.975
2006-01-01	63.150
2007-01-01	66.625
2008-01-01	65.925
2009-01-01	64.075
2010-01-01	62.625
2011-01-01	61.975
2012-01-01	61.650
2013-01-01	61.950
2014-01-01	61.750
2015-01-01	61.825
2016-01-01	62.175
2017-01-01	62.000