Year	Percent
1996-01-01	6.0524300000000000
1997-01-01	4.8574500000000000
1998-01-01	6.3077100000000000
1999-01-01	4.9130400000000005
2000-01-01	4.7183600000000000
2001-01-01	9.7558300000000000
2002-01-01	7.5479600000000010
2003-01-01	6.5334400000000010
2004-01-01	2.1475299999999997
2005-01-01	2.1614700000000000
2006-01-01	3.5390300000000003
2007-01-01	3.6472700000000000
2008-01-01	3.9901300000000000
2009-01-01	4.7173400000000000
2010-01-01	3.8631400000000000
2011-01-01	3.7214099999999997
2012-01-01	3.7880599999999998
2013-01-01	3.8227900000000004
2014-01-01	2.4901200000000000
2015-01-01	3.3244599999999997
2016-01-01	2.0230000000000000