Year	Percent
2000-01-01	36.300
2001-01-01	35.750
2002-01-01	35.125
2003-01-01	35.275
2004-01-01	35.150
2005-01-01	35.100
2006-01-01	34.700
2007-01-01	33.875
2008-01-01	33.450
2009-01-01	33.250
2010-01-01	34.900
2011-01-01	35.475
2012-01-01	35.000
2013-01-01	35.050
2014-01-01	35.625
2015-01-01	35.625
2016-01-01	35.925
2017-01-01	35.975