Year	Percent
1996-01-01	9.4087800000000000
1997-01-01	5.5811199999999990
1998-01-01	1.1807600000000000
1999-01-01	6.6839100000000010
2000-01-01	7.9563399999999990
2001-01-01	7.5130500000000000
2002-01-01	6.2364300000000000
2003-01-01	5.3442400000000000
2004-01-01	5.4253800000000005
2005-01-01	5.9525200000000000
2006-01-01	5.3477500000000000
2007-01-01	5.3333699999999995
2008-01-01	4.8830900000000000
2009-01-01	4.5263700000000000
2010-01-01	4.3089500000000000
2011-01-01	4.1837500000000000
2012-01-01	4.0213199999999990
2013-01-01	4.1006599999999995
2014-01-01	4.2484900000000000
2015-01-01	1.4455500000000000
2016-01-01	4.1146400000000005