Year	Percent
2007-01-01	5.03
2008-01-01	4.48
2009-01-01	8.05
2010-01-01	9.15
2011-01-01	8.01
2012-01-01	7.93
2013-01-01	7.67
2014-01-01	7.85
2015-01-01	8.26