Year	Percent
2001-01-01	4.925
2002-01-01	5.100
2003-01-01	5.750
2004-01-01	6.600
2005-01-01	7.575
2006-01-01	7.125
2007-01-01	6.275
2008-01-01	6.325
2009-01-01	8.475
2010-01-01	8.775
2011-01-01	7.950
2012-01-01	8.150
2013-01-01	8.225
2014-01-01	8.150
2015-01-01	7.625
2016-01-01	7.150
2017-01-01	6.850