Year	Percent
2003-01-01	69.000
2004-01-01	70.400
2005-01-01	67.900
2006-01-01	69.400
2007-01-01	69.375
2008-01-01	69.200
2009-01-01	65.075
2010-01-01	73.175
2011-01-01	73.650
2012-01-01	71.225
2013-01-01	70.150
2014-01-01	70.350
2015-01-01	63.800
2016-01-01	69.625
2017-01-01	67.425