Year	Percent
2000-01-01	8.6
2001-01-01	12.1
2002-01-01	11.6
2003-01-01	10.9
2004-01-01	8.9
2005-01-01	12.7
2006-01-01	12.9
2007-01-01	10.7
2008-01-01	9.0
2009-01-01	8.6
2010-01-01	8.9
2011-01-01	8.1
2012-01-01	8.0
2013-01-01	8.0
2014-01-01	7.4