Year	Percent
1999-01-01	5.450
2000-01-01	5.300
2001-01-01	5.550
2002-01-01	5.800
2003-01-01	6.475
2004-01-01	10.750
2005-01-01	10.300
2006-01-01	9.725
2007-01-01	9.600
2008-01-01	8.575
2009-01-01	10.050
2010-01-01	9.350
2011-01-01	9.125
2012-01-01	9.225
2013-01-01	9.975
2014-01-01	9.950
2015-01-01	9.975
2016-01-01	10.175
2017-01-01	8.725