Year	Percent
2000-01-01	40.600
2001-01-01	41.250
2002-01-01	41.825
2003-01-01	41.050
2004-01-01	41.100
2005-01-01	41.250
2006-01-01	39.350
2007-01-01	39.450
2008-01-01	38.900
2009-01-01	39.300
2010-01-01	39.475
2011-01-01	38.700
2012-01-01	38.675
2013-01-01	38.675
2014-01-01	38.900
2015-01-01	37.875
2016-01-01	37.125
2017-01-01	36.350