Year	Percent
1996-01-01	4.4257100000000000
1997-01-01	6.4892500000000000
1998-01-01	4.8213700000000000
1999-01-01	4.8577699999999995
2000-01-01	4.4200500000000000
2001-01-01	4.2852600000000000
2002-01-01	4.4185000000000000
2003-01-01	4.4010700000000000
2004-01-01	4.6831600000000000
2005-01-01	4.7408000000000000
2006-01-01	4.4538199999999994
2007-01-01	4.7271300000000010
2008-01-01	0.2116440000000000
2009-01-01	2.8714100000000000
2010-01-01	3.1401000000000000
2011-01-01	2.6759700000000000
2012-01-01	2.6737599999999997
2013-01-01	2.3501500000000000
2014-01-01	2.3004100000000000
2015-01-01	1.9087900000000002
2016-01-01	2.0823800000000000