Year	Percent
1996-01-01	2.8432300000000000
1997-01-01	7.0015300000000010
1998-01-01	3.9344800000000000
1999-01-01	4.1425000000000000
2000-01-01	4.3694900000000000
2001-01-01	3.9330900000000000
2002-01-01	4.1758600000000000
2003-01-01	4.3141400000000000
2004-01-01	4.4962900000000000
2005-01-01	4.2130800000000010
2006-01-01	3.6824800000000004
2007-01-01	3.4527200000000000
2008-01-01	3.4054699999999998
2009-01-01	3.9103700000000000
2010-01-01	4.8172700000000000
2011-01-01	3.5837000000000000
2012-01-01	2.0450100000000000
2013-01-01	3.7121900000000000
2014-01-01	3.6306599999999998
2015-01-01	2.3626000000000000
2016-01-01	4.5205400000000004