Year	Percent
1999-01-01	7.200
2000-01-01	5.750
2001-01-01	5.925
2002-01-01	6.675
2003-01-01	7.675
2004-01-01	7.500
2005-01-01	7.625
2006-01-01	7.425
2007-01-01	6.675
2008-01-01	6.475
2009-01-01	7.750
2010-01-01	8.150
2011-01-01	7.125
2012-01-01	7.675
2013-01-01	8.675
2014-01-01	9.050
2015-01-01	9.125
2016-01-01	8.075
2017-01-01	7.125