Year	Percent
1996-01-01	0.7974820000000000
1997-01-01	4.6702100000000000
1998-01-01	4.5699400000000000
1999-01-01	3.8134400000000000
2000-01-01	2.6983700000000000
2001-01-01	1.6511200000000001
2002-01-01	4.5407400000000000
2003-01-01	4.0094000000000000
2004-01-01	3.6596100000000000
2005-01-01	4.1068500000000000
2006-01-01	3.3452500000000000
2007-01-01	2.3405000000000000
2008-01-01	2.0822100000000000
2009-01-01	2.7221100000000000
2010-01-01	2.4103900000000000
2011-01-01	3.2289600000000000
2012-01-01	5.0309900000000000
2013-01-01	5.4744900000000000
2014-01-01	4.9379000000000000
2015-01-01	7.5473600000000000
2016-01-01	6.9450500000000000