Year	Percent
2000-01-01	73.750
2001-01-01	74.475
2002-01-01	74.475
2003-01-01	73.525
2004-01-01	72.000
2005-01-01	71.250
2006-01-01	71.525
2007-01-01	73.075
2008-01-01	73.725
2009-01-01	72.700
2010-01-01	68.625
2011-01-01	66.975
2012-01-01	67.725
2013-01-01	68.400
2014-01-01	67.000
2015-01-01	67.550
2016-01-01	67.225
2017-01-01	67.025