Year	Percent
2003-01-01	84.825
2004-01-01	84.075
2005-01-01	85.525
2006-01-01	85.575
2007-01-01	85.425
2008-01-01	84.250
2009-01-01	83.275
2010-01-01	83.500
2011-01-01	83.775
2012-01-01	82.600
2013-01-01	83.850
2014-01-01	87.425
2015-01-01	87.550
2016-01-01	86.375
2017-01-01	85.400