Year	Percent
2002-01-01	2.74
2003-01-01	3.37
2004-01-01	2.55
2005-01-01	2.78
2006-01-01	2.86
2007-01-01	4.01
2008-01-01	2.49
2009-01-01	3.85
2010-01-01	3.75
2011-01-01	2.94
2012-01-01	3.61
2013-01-01	3.09
2014-01-01	3.25
2015-01-01	3.44
2016-01-01	3.83