Year	Percent
2005-01-01	53.550
2006-01-01	56.100
2007-01-01	59.425
2008-01-01	61.700
2009-01-01	63.750
2010-01-01	65.200
2011-01-01	67.100
2012-01-01	68.600
2013-01-01	69.900
2014-01-01	71.375
2015-01-01	71.325
2016-01-01	73.700
2017-01-01	75.000