Year	Percent
2000-01-01	12.100
2001-01-01	14.075
2002-01-01	16.275
2003-01-01	16.250
2004-01-01	15.800
2005-01-01	14.250
2006-01-01	11.175
2007-01-01	7.750
2008-01-01	5.400
2009-01-01	6.325
2010-01-01	7.900
2011-01-01	7.500
2012-01-01	7.925
2013-01-01	8.200
2014-01-01	7.225
2015-01-01	6.200
2016-01-01	5.175
2017-01-01	4.075