Year	Percent
2005-01-01	35.825
2006-01-01	37.100
2007-01-01	37.875
2008-01-01	38.600
2009-01-01	40.000
2010-01-01	40.975
2011-01-01	42.575
2012-01-01	44.600
2013-01-01	46.525
2014-01-01	48.425
2015-01-01	50.000
2016-01-01	52.000
2017-01-01	53.775