Year	Percent
1996-01-01	7.7197300000000000
1997-01-01	17.7766000000000000
1998-01-01	12.3637000000000000
1999-01-01	3.0222700000000002
2000-01-01	10.3393000000000000
2001-01-01	10.3621000000000000
2002-01-01	11.4564000000000000
2003-01-01	11.9941000000000000
2004-01-01	11.4337000000000000
2005-01-01	10.7299000000000000
2006-01-01	8.6033300000000000
2007-01-01	6.5413800000000000
2008-01-01	3.3310100000000000
2009-01-01	4.7591199999999990
2010-01-01	4.8378100000000000
2011-01-01	5.0277699999999990
2012-01-01	5.0799100000000000
2013-01-01	5.4342500000000000
2014-01-01	4.0726400000000000
2015-01-01	5.7395000000000000
2016-01-01	2.5508000000000000