Year	Percent
2005-01-01	51.800
2006-01-01	52.500
2007-01-01	53.125
2008-01-01	53.475
2009-01-01	52.300
2010-01-01	51.875
2011-01-01	51.825
2012-01-01	51.575
2013-01-01	51.350
2014-01-01	51.725
2015-01-01	52.175
2016-01-01	52.800
2017-01-01	53.525