Year	Percent
2000-01-01	11.525
2001-01-01	10.175
2002-01-01	10.150
2003-01-01	10.450
2004-01-01	10.575
2005-01-01	10.975
2006-01-01	12.000
2007-01-01	12.500
2008-01-01	12.775
2009-01-01	16.100
2010-01-01	17.575
2011-01-01	18.500
2012-01-01	18.150
2013-01-01	18.125
2014-01-01	14.800
2015-01-01	12.925
2016-01-01	11.075
2017-01-01	10.550