Year	Percent
2000-01-01	1.10
2001-01-01	1.88
2002-01-01	2.52
2003-01-01	4.54
2004-01-01	4.47
2005-01-01	4.34
2006-01-01	2.80
2007-01-01	3.35
2008-01-01	2.02
2009-01-01	3.01
2010-01-01	2.53
2011-01-01	1.69
2012-01-01	1.89
2013-01-01	1.48
2014-01-01	1.64
2015-01-01	1.50
2016-01-01	1.42