Year	Percent
2005-01-01	5.4
2006-01-01	5.0
2007-01-01	4.6
2008-01-01	5.0
2009-01-01	7.5
2010-01-01	7.5
2011-01-01	7.0
2012-01-01	7.0
2013-01-01	7.0
2014-01-01	6.5
2015-01-01	6.0
2016-01-01	5.6