Year	Percent
1996-01-01	4.7486300000000000
1997-01-01	4.8666700000000000
1998-01-01	4.6708600000000000
1999-01-01	4.9818000000000000
2000-01-01	5.1702600000000000
2001-01-01	4.6779100000000000
2002-01-01	2.6785400000000004
2003-01-01	3.6454300000000000
2004-01-01	3.9663500000000000
2005-01-01	4.0691300000000000
2006-01-01	1.7544700000000000
2007-01-01	3.7077800000000000
2008-01-01	2.7027099999999997
2009-01-01	2.8415600000000000
2010-01-01	2.9863900000000000
2011-01-01	2.2311400000000003
2012-01-01	3.1138800000000000
2013-01-01	3.0554700000000000
2014-01-01	2.6552400000000000
2015-01-01	3.3997900000000003
2016-01-01	1.4756900000000000