Year	Percent
2000-01-01	63.250
2001-01-01	63.675
2002-01-01	63.775
2003-01-01	64.000
2004-01-01	64.575
2005-01-01	65.825
2006-01-01	67.050
2007-01-01	70.625
2008-01-01	69.875
2009-01-01	68.025
2010-01-01	66.550
2011-01-01	65.975
2012-01-01	65.700
2013-01-01	66.175
2014-01-01	66.000
2015-01-01	66.125
2016-01-01	66.625
2017-01-01	66.475