Year	Percent
2005-01-01	49.050
2006-01-01	49.500
2007-01-01	49.675
2008-01-01	50.025
2009-01-01	50.300
2010-01-01	50.350
2011-01-01	50.550
2012-01-01	50.925
2013-01-01	51.100
2014-01-01	51.275
2015-01-01	51.300
2016-01-01	51.550
2017-01-01	51.825