Year	Percent
1999-01-01	1.9501099999999998
2000-01-01	3.8314900000000000
2001-01-01	2.6932900000000000
2002-01-01	2.6835600000000000
2003-01-01	2.6437500000000000
2004-01-01	2.6293200000000000
2005-01-01	4.1962800000000010
2006-01-01	9.2817600000000000
2007-01-01	6.4936600000000000
2008-01-01	1.6602800000000000
2009-01-01	3.1012299999999997
2010-01-01	4.6319700000000000
2011-01-01	2.9575600000000000
2012-01-01	2.6326300000000000
2013-01-01	2.5981600000000000
2014-01-01	2.6873400000000003
2015-01-01	0.7134620000000000
2016-01-01	0.8979550000000000