Year	Percent
2003-01-01	8.400
2004-01-01	8.125
2005-01-01	7.450
2006-01-01	8.200
2007-01-01	6.950
2008-01-01	8.225
2009-01-01	15.600
2010-01-01	16.075
2011-01-01	14.375
2012-01-01	13.500
2013-01-01	10.525
2014-01-01	9.750
2015-01-01	8.750
2016-01-01	6.500
2017-01-01	7.725