Year	Percent
2000-01-01	47.150
2001-01-01	47.425
2002-01-01	47.975
2003-01-01	46.975
2004-01-01	46.850
2005-01-01	46.400
2006-01-01	45.225
2007-01-01	45.925
2008-01-01	45.250
2009-01-01	45.300
2010-01-01	44.900
2011-01-01	44.350
2012-01-01	44.575
2013-01-01	44.575
2014-01-01	45.400
2015-01-01	44.075
2016-01-01	43.625
2017-01-01	42.950