Year	Percent
2005-01-01	52.425
2006-01-01	52.450
2007-01-01	52.150
2008-01-01	52.150
2009-01-01	53.375
2010-01-01	54.800
2011-01-01	55.375
2012-01-01	55.875
2013-01-01	56.500
2014-01-01	57.350
2015-01-01	57.875
2016-01-01	58.050
2017-01-01	57.950