Year	Percent
2005-01-01	40.525
2006-01-01	41.750
2007-01-01	43.300
2008-01-01	44.375
2009-01-01	45.150
2010-01-01	45.725
2011-01-01	46.975
2012-01-01	48.550
2013-01-01	49.975
2014-01-01	51.650
2015-01-01	53.275
2016-01-01	55.275
2017-01-01	57.125