Year	Percent
2006-01-01	49.850
2007-01-01	50.200
2008-01-01	50.550
2009-01-01	50.575
2010-01-01	49.775
2011-01-01	51.300
2012-01-01	49.750
2013-01-01	51.000
2014-01-01	53.925
2015-01-01	53.975
2016-01-01	54.200
2017-01-01	55.150