Year	Percent
2000-01-01	63.700
2001-01-01	64.250
2002-01-01	64.875
2003-01-01	64.725
2004-01-01	64.850
2005-01-01	64.900
2006-01-01	65.300
2007-01-01	66.125
2008-01-01	66.550
2009-01-01	66.750
2010-01-01	65.100
2011-01-01	64.525
2012-01-01	65.000
2013-01-01	64.950
2014-01-01	64.375
2015-01-01	64.375
2016-01-01	64.075
2017-01-01	64.025