Year	Percent
2000-01-01	47.050
2001-01-01	45.900
2002-01-01	44.725
2003-01-01	42.850
2004-01-01	42.225
2005-01-01	41.600
2006-01-01	40.900
2007-01-01	40.750
2008-01-01	40.175
2009-01-01	39.725
2010-01-01	40.000
2011-01-01	40.325
2012-01-01	38.900
2013-01-01	37.175
2014-01-01	36.450
2015-01-01	35.575
2016-01-01	34.225
2017-01-01	33.550