Year	Percent
2005-01-01	6.3
2006-01-01	5.8
2007-01-01	5.3
2008-01-01	5.4
2009-01-01	7.0
2010-01-01	7.4
2011-01-01	7.3
2012-01-01	7.5
2013-01-01	7.4
2014-01-01	7.1
2015-01-01	6.5
2016-01-01	6.2