Year	Percent
2006-01-01	45.525
2007-01-01	45.550
2008-01-01	46.200
2009-01-01	47.075
2010-01-01	48.125
2011-01-01	49.325
2012-01-01	49.375
2013-01-01	50.275
2014-01-01	50.475
2015-01-01	51.250
2016-01-01	51.975
2017-01-01	52.775