Year	Percent
2005-01-01	5.9
2006-01-01	5.4
2007-01-01	5.0
2008-01-01	5.1
2009-01-01	6.6
2010-01-01	6.9
2011-01-01	6.8
2012-01-01	6.9
2013-01-01	6.9
2014-01-01	6.5
2015-01-01	6.0
2016-01-01	5.6