Year	Percent
1996-01-01	3.5541699999999996
1997-01-01	3.2344700000000000
1998-01-01	2.0907100000000000
1999-01-01	0.9287080000000000
2000-01-01	1.0443500000000000
2001-01-01	1.0443500000000000
2002-01-01	2.8682600000000000
2003-01-01	3.5827600000000000
2004-01-01	6.7274800000000000
2005-01-01	3.6245000000000000
2006-01-01	3.1917000000000000
2007-01-01	3.1111700000000000
2008-01-01	2.6377500000000000
2009-01-01	2.4536900000000000
2010-01-01	2.3374099999999998
2011-01-01	2.0478000000000000
2012-01-01	1.7805900000000001
2013-01-01	1.8913099999999998
2014-01-01	1.9976500000000000
2015-01-01	2.1212900000000000
2016-01-01	2.4414400000000000