Year	Percent
2000-01-01	17.80
2001-01-01	23.40
2002-01-01	22.00
2003-01-01	14.40
2004-01-01	5.90
2005-01-01	3.50
2006-01-01	3.10
2007-01-01	2.60
2008-01-01	1.90
2009-01-01	1.80
2010-01-01	1.93
2011-01-01	2.62
2012-01-01	3.20
2013-01-01	2.30
2014-01-01	3.20
2015-01-01	4.30