Year	Percent
1996-01-01	2.3984099999999997
1997-01-01	2.9230600000000000
1998-01-01	3.7657400000000000
1999-01-01	3.6145400000000003
2000-01-01	3.6079900000000000
2001-01-01	1.2125600000000000
2002-01-01	1.2357500000000000
2003-01-01	0.8346740000000000
2004-01-01	1.1240500000000000
2005-01-01	1.4871500000000000
2006-01-01	1.4617400000000000
2007-01-01	1.2524500000000000
2008-01-01	0.9904770000000000
2009-01-01	1.0380000000000000
2010-01-01	1.2804900000000000
2011-01-01	1.9843099999999998
2012-01-01	2.7751000000000000
2013-01-01	2.6887500000000000
2014-01-01	3.5673900000000000
2015-01-01	1.0846300000000000
2016-01-01	3.0796700000000000