Year	Percent
2000-01-01	43.675
2001-01-01	42.925
2002-01-01	42.225
2003-01-01	41.725
2004-01-01	41.050
2005-01-01	39.225
2006-01-01	38.125
2007-01-01	33.800
2008-01-01	33.975
2009-01-01	34.700
2010-01-01	35.475
2011-01-01	35.550
2012-01-01	35.475
2013-01-01	34.675
2014-01-01	34.850
2015-01-01	34.825
2016-01-01	33.725
2017-01-01	33.375