Year	Percent
2000-01-01	27.825
2001-01-01	29.425
2002-01-01	31.550
2003-01-01	33.825
2004-01-01	34.450
2005-01-01	38.200
2006-01-01	40.000
2007-01-01	41.025
2008-01-01	42.700
2009-01-01	43.925
2010-01-01	45.875
2011-01-01	46.950
2012-01-01	46.825
2013-01-01	48.350
2014-01-01	49.225
2015-01-01	50.075
2016-01-01	51.925
2017-01-01	53.650