Year	Percent
2000-01-01	26.675
2001-01-01	28.425
2002-01-01	30.600
2003-01-01	32.575
2004-01-01	34.400
2005-01-01	36.475
2006-01-01	38.550
2007-01-01	41.400
2008-01-01	43.500
2009-01-01	46.000
2010-01-01	44.475
2011-01-01	48.225
2012-01-01	50.975
2013-01-01	52.775
2014-01-01	54.325
2015-01-01	56.675
2016-01-01	58.575
2017-01-01	60.125