Year	Percent
2001-01-01	7.25
2002-01-01	8.41
2003-01-01	9.52
2004-01-01	9.91
2005-01-01	10.79
2006-01-01	13.07
2007-01-01	12.26
2008-01-01	10.97
2009-01-01	10.96
2010-01-01	13.62
2011-01-01	12.37
2012-01-01	12.88
2013-01-01	14.68
2014-01-01	13.98
2015-01-01	13.00
2016-01-01	12.75