Year	Percent
2000-01-01	38.175
2001-01-01	39.600
2002-01-01	42.350
2003-01-01	44.325
2004-01-01	45.250
2005-01-01	46.125
2006-01-01	47.650
2007-01-01	50.850
2008-01-01	52.975
2009-01-01	55.100
2010-01-01	53.700
2011-01-01	55.175
2012-01-01	57.600
2013-01-01	59.175
2014-01-01	59.850
2015-01-01	61.725
2016-01-01	63.475
2017-01-01	65.650