Year	Percent
1996-01-01	9.2962400000000000
1997-01-01	6.8454000000000000
1998-01-01	5.7131500000000000
1999-01-01	5.4393800000000000
2000-01-01	5.3088600000000000
2001-01-01	4.2187600000000000
2002-01-01	4.2253900000000000
2003-01-01	3.4547400000000000
2004-01-01	3.0593100000000000
2005-01-01	2.3973600000000000
2006-01-01	2.6276000000000000
2007-01-01	2.9519200000000000
2008-01-01	2.6783900000000003
2009-01-01	1.6374600000000001
2010-01-01	1.4994399999999999
2011-01-01	1.9624200000000000
2012-01-01	1.7230200000000000
2013-01-01	1.7449400000000002
2014-01-01	1.7768300000000000
2015-01-01	1.5546000000000000
2016-01-01	1.8137400000000001