Year	Percent
2005-01-01	4.5
2006-01-01	4.3
2007-01-01	4.0
2008-01-01	4.1
2009-01-01	5.6
2010-01-01	6.0
2011-01-01	5.7
2012-01-01	5.7
2013-01-01	5.6
2014-01-01	5.2
2015-01-01	4.9
2016-01-01	4.7