Year	Percent
2004-01-01	4.975
2005-01-01	4.800
2006-01-01	4.250
2007-01-01	3.800
2008-01-01	4.425
2009-01-01	5.475
2010-01-01	6.050
2011-01-01	6.125
2012-01-01	8.050
2013-01-01	9.575
2014-01-01	9.825
2015-01-01	9.450
2016-01-01	9.200
2017-01-01	8.875