Year	Percent
2005-01-01	43.750
2006-01-01	44.925
2007-01-01	46.150
2008-01-01	47.100
2009-01-01	48.475
2010-01-01	49.375
2011-01-01	50.675
2012-01-01	52.750
2013-01-01	54.625
2014-01-01	56.400
2015-01-01	58.000
2016-01-01	59.800
2017-01-01	61.275