Year	Percent
2003-01-01	84.550
2004-01-01	82.800
2005-01-01	82.900
2006-01-01	83.100
2007-01-01	82.925
2008-01-01	81.975
2009-01-01	79.775
2010-01-01	79.550
2011-01-01	79.850
2012-01-01	81.600
2013-01-01	81.275
2014-01-01	82.625
2015-01-01	84.600
2016-01-01	86.450
2017-01-01	86.950