Year	Percent
1996-01-01	5.3597500000000000
1997-01-01	5.4923400000000000
1998-01-01	4.8530000000000000
1999-01-01	4.2648900000000000
2000-01-01	5.6786699999999990
2001-01-01	2.8797800000000000
2002-01-01	3.2434800000000000
2003-01-01	3.7645000000000000
2004-01-01	3.5257800000000000
2005-01-01	3.0661300000000000
2006-01-01	3.2127800000000000
2007-01-01	2.7941599999999998
2008-01-01	3.5988300000000004
2009-01-01	4.4085500000000000
2010-01-01	4.5029600000000000
2011-01-01	4.6536400000000000
2012-01-01	5.2533600000000000
2013-01-01	5.5245900000000000
2014-01-01	5.1279000000000000
2015-01-01	5.1692599999999995
2016-01-01	4.0110300000000000