Year	Percent
2000-01-01	13.900
2001-01-01	15.575
2002-01-01	17.250
2003-01-01	17.075
2004-01-01	16.700
2005-01-01	15.725
2006-01-01	12.225
2007-01-01	8.375
2008-01-01	6.100
2009-01-01	6.900
2010-01-01	8.275
2011-01-01	8.225
2012-01-01	8.775
2013-01-01	9.050
2014-01-01	7.925
2015-01-01	6.625
2016-01-01	5.375
2017-01-01	4.225