Year	Percent
2000-01-01	44.725
2001-01-01	43.725
2002-01-01	41.475
2003-01-01	45.175
2004-01-01	45.200
2005-01-01	41.150
2006-01-01	40.850
2007-01-01	43.525
2008-01-01	44.500
2009-01-01	43.800
2010-01-01	41.150
2011-01-01	43.425
2012-01-01	44.275
2013-01-01	41.375
2014-01-01	41.375
2015-01-01	45.675
2016-01-01	46.100
2017-01-01	49.700