Year	Percent
2005-01-01	6.5
2006-01-01	6.0
2007-01-01	5.6
2008-01-01	5.9
2009-01-01	8.1
2010-01-01	8.3
2011-01-01	7.9
2012-01-01	7.9
2013-01-01	7.9
2014-01-01	7.3
2015-01-01	6.8
2016-01-01	6.3