Year	Percent
2001-01-01	2.77
2002-01-01	2.66
2003-01-01	2.41
2004-01-01	2.97
2005-01-01	3.22
2006-01-01	3.19
2007-01-01	3.60
2008-01-01	3.47
2009-01-01	3.44
2010-01-01	3.59
2011-01-01	3.99
2012-01-01	3.71
2013-01-01	3.54
2014-01-01	3.39