Year	Percent
2003-01-01	69.300
2004-01-01	69.100
2005-01-01	67.600
2006-01-01	66.400
2007-01-01	67.325
2008-01-01	64.950
2009-01-01	60.625
2010-01-01	59.450
2011-01-01	59.600
2012-01-01	58.125
2013-01-01	57.550
2014-01-01	55.575
2015-01-01	59.675
2016-01-01	58.350
2017-01-01	58.925