Year	Percent
2005-01-01	4.07
2006-01-01	6.11
2007-01-01	8.32
2008-01-01	3.99
2009-01-01	5.13
2010-01-01	5.65
2011-01-01	4.91
2012-01-01	5.07
2013-01-01	5.12
2014-01-01	5.72
2015-01-01	5.97
2016-01-01	6.12