Year	Percent
2000-01-01	13.025
2001-01-01	11.475
2002-01-01	9.550
2003-01-01	8.950
2004-01-01	8.600
2005-01-01	6.800
2006-01-01	5.400
2007-01-01	4.175
2008-01-01	4.800
2009-01-01	9.700
2010-01-01	12.700
2011-01-01	11.500
2012-01-01	9.225
2013-01-01	8.225
2014-01-01	7.200
2015-01-01	5.800
2016-01-01	5.650
2017-01-01	5.350