Year	Percent
2000-01-01	13.225
2001-01-01	13.850
2002-01-01	15.175
2003-01-01	14.825
2004-01-01	14.400
2005-01-01	14.225
2006-01-01	10.975
2007-01-01	11.525
2008-01-01	11.850
2009-01-01	12.200
2010-01-01	11.725
2011-01-01	11.650
2012-01-01	12.225
2013-01-01	12.375
2014-01-01	12.925
2015-01-01	12.100
2016-01-01	12.200
2017-01-01	11.425