Year	Percent
1996-01-01	15.9901000000000000
1997-01-01	16.1309000000000000
1998-01-01	14.6948000000000000
1999-01-01	16.9472000000000000
2000-01-01	13.6740000000000010
2001-01-01	12.6730000000000000
2002-01-01	13.8206000000000000
2003-01-01	14.8724000000000000
2004-01-01	13.2905000000000000
2005-01-01	12.7209999999999980
2006-01-01	12.4776000000000000
2007-01-01	8.5767300000000000
2008-01-01	1.4538799999999998
2009-01-01	1.6454099999999998
2010-01-01	5.9648000000000000
2011-01-01	7.6359600000000010
2012-01-01	8.7957700000000000
2013-01-01	9.3780399999999990
2014-01-01	9.0904700000000000
2015-01-01	9.3213000000000000
2016-01-01	9.2876200000000000