Year	Percent
2005-01-01	4.8
2006-01-01	4.5
2007-01-01	4.2
2008-01-01	4.3
2009-01-01	6.1
2010-01-01	6.7
2011-01-01	6.3
2012-01-01	6.1
2013-01-01	6.1
2014-01-01	5.6
2015-01-01	5.3
2016-01-01	5.1