Year	Percent
1996-01-01	7.4762800000000000
1997-01-01	14.3156000000000000
1998-01-01	9.6975100000000010
1999-01-01	7.4487300000000000
2000-01-01	7.3276000000000000
2001-01-01	5.3397800000000000
2002-01-01	4.6887600000000000
2003-01-01	4.0033500000000000
2004-01-01	3.1163200000000000
2005-01-01	2.2633099999999997
2006-01-01	1.9077500000000000
2007-01-01	2.2534700000000000
2008-01-01	2.3344900000000000
2009-01-01	1.9901500000000000
2010-01-01	2.7185000000000000
2011-01-01	2.9983200000000000
2012-01-01	9.2188200000000000
2013-01-01	2.9470600000000000
2014-01-01	2.9437200000000000
2015-01-01	1.6973099999999999
2016-01-01	2.6734299999999998