Year	Percent
2004-01-01	8.700
2005-01-01	8.375
2006-01-01	7.325
2007-01-01	6.575
2008-01-01	7.225
2009-01-01	7.800
2010-01-01	8.175
2011-01-01	7.950
2012-01-01	10.025
2013-01-01	11.100
2014-01-01	11.750
2015-01-01	10.850
2016-01-01	11.075
2017-01-01	10.875