Year	Percent
2000-01-01	35.325
2001-01-01	33.950
2002-01-01	33.050
2003-01-01	32.825
2004-01-01	32.025
2005-01-01	30.400
2006-01-01	29.525
2007-01-01	27.650
2008-01-01	27.525
2009-01-01	27.425
2010-01-01	27.450
2011-01-01	27.325
2012-01-01	27.050
2013-01-01	25.975
2014-01-01	25.750
2015-01-01	25.500
2016-01-01	25.250
2017-01-01	24.225