Year	Percent
1996-01-01	4.0125400000000000
1997-01-01	5.3191500000000000
1998-01-01	6.3053099999999995
1999-01-01	6.0126599999999994
2000-01-01	6.1455000000000000
2001-01-01	5.8275100000000000
2002-01-01	5.6002800000000010
2003-01-01	4.7516200000000000
2004-01-01	5.4476800000000000
2005-01-01	5.0717700000000000
2006-01-01	7.1092800000000000
2007-01-01	4.9543700000000000
2008-01-01	5.0121000000000000
2009-01-01	4.7281200000000000
2010-01-01	4.6996800000000000
2011-01-01	4.4994100000000000
2012-01-01	2.4215000000000000
2013-01-01	3.7969199999999996
2014-01-01	3.5421300000000002
2015-01-01	1.2940200000000002
2016-01-01	1.9422400000000002