Year	Percent
2000-01-01	35.150
2001-01-01	35.800
2002-01-01	36.150
2003-01-01	36.825
2004-01-01	36.825
2005-01-01	37.775
2006-01-01	37.725
2007-01-01	38.625
2008-01-01	38.775
2009-01-01	40.775
2010-01-01	41.575
2011-01-01	41.800
2012-01-01	41.350
2013-01-01	41.675
2014-01-01	42.175
2015-01-01	41.475
2016-01-01	41.600
2017-01-01	42.375