Year	Percent
2003-01-01	71.450
2004-01-01	72.025
2005-01-01	78.050
2006-01-01	80.275
2007-01-01	79.450
2008-01-01	79.425
2009-01-01	75.500
2010-01-01	76.100
2011-01-01	74.525
2012-01-01	78.000
2013-01-01	81.475
2014-01-01	78.775
2015-01-01	81.950
2016-01-01	83.450
2017-01-01	82.325