Year	Percent
2005-01-01	45.225
2006-01-01	46.325
2007-01-01	47.025
2008-01-01	47.875
2009-01-01	48.900
2010-01-01	49.575
2011-01-01	50.625
2012-01-01	52.500
2013-01-01	54.300
2014-01-01	55.875
2015-01-01	57.250
2016-01-01	59.075
2017-01-01	60.575