Year	Percent
2006-01-01	56.350
2007-01-01	57.550
2008-01-01	56.625
2009-01-01	55.675
2010-01-01	54.350
2011-01-01	51.950
2012-01-01	51.375
2013-01-01	52.150
2014-01-01	50.750
2015-01-01	49.725
2016-01-01	46.975
2017-01-01	45.200