Year	Percent
2003-01-01	8.900
2004-01-01	9.325
2005-01-01	9.300
2006-01-01	9.125
2007-01-01	8.100
2008-01-01	7.450
2009-01-01	8.825
2010-01-01	9.100
2011-01-01	9.175
2012-01-01	9.400
2013-01-01	9.800
2014-01-01	10.075
2015-01-01	9.925
2016-01-01	9.925
2017-01-01	9.425