Year	Percent
1996-01-01	16.0816000000000000
1997-01-01	12.0888000000000000
1998-01-01	11.0040000000000010
1999-01-01	6.4917300000000004
2000-01-01	10.6003000000000000
2001-01-01	10.3429000000000000
2002-01-01	12.1202000000000000
2003-01-01	10.9231000000000000
2004-01-01	7.5330100000000010
2005-01-01	7.3018100000000010
2006-01-01	6.8312000000000000
2007-01-01	7.0890500000000000
2008-01-01	7.1992000000000000
2009-01-01	6.8479700000000000
2010-01-01	6.6485000000000000
2011-01-01	8.9723000000000000
2012-01-01	8.8750800000000000
2013-01-01	7.7021200000000000
2014-01-01	7.1244000000000000
2015-01-01	6.8402199999999995
2016-01-01	5.6015800000000000