Year	Percent
1996-01-01	16.0806000000000000
1997-01-01	13.5135000000000000
1998-01-01	8.4210500000000000
1999-01-01	6.7516200000000000
2000-01-01	5.8617800000000000
2001-01-01	8.5308100000000000
2002-01-01	6.9910000000000005
2003-01-01	5.8664200000000000
2004-01-01	5.9853200000000000
2005-01-01	6.6536899999999990
2006-01-01	7.0326500000000000
2007-01-01	6.9983600000000010
2008-01-01	7.5585100000000010
2009-01-01	5.0004900000000000
2010-01-01	5.3597199999999990
2011-01-01	5.1979200000000000
2012-01-01	5.0032100000000000
2013-01-01	5.3298700000000000
2014-01-01	5.2844600000000000
2015-01-01	5.2014700000000000
2016-01-01	3.1514200000000000