Year	Percent
2000-01-01	6.15
2001-01-01	10.17
2002-01-01	11.02
2003-01-01	15.83
2004-01-01	5.73
2005-01-01	4.19
2006-01-01	4.57
2007-01-01	4.37
2008-01-01	3.80
2009-01-01	4.24
2010-01-01	3.86
2011-01-01	3.08
2012-01-01	3.24
2013-01-01	3.90
2014-01-01	4.15
2015-01-01	4.65
2016-01-01	4.06