Year	Percent
2001-01-01	11.100
2002-01-01	14.125
2003-01-01	9.925
2004-01-01	14.850
2005-01-01	14.075
2006-01-01	9.500
2007-01-01	9.025
2008-01-01	8.500
2009-01-01	9.900
2010-01-01	11.025
2011-01-01	9.075
2012-01-01	11.550
2013-01-01	11.650
2014-01-01	11.725
2015-01-01	10.625
2016-01-01	9.675
2017-01-01	6.450