Year	Percent
1996-01-01	2.9194700000000000
1997-01-01	2.8606800000000000
1998-01-01	6.3716099999999996
1999-01-01	5.7026500000000000
2000-01-01	1.3808400000000000
2001-01-01	3.6127700000000000
2002-01-01	5.3447200000000000
2003-01-01	9.7099000000000000
2004-01-01	15.5741000000000000
2005-01-01	9.7338500000000000
2006-01-01	12.2043000000000000
2007-01-01	6.9117800000000000
2008-01-01	5.1001400000000010
2009-01-01	14.6011000000000000
2010-01-01	11.7809000000000000
2011-01-01	14.0431000000000000
2012-01-01	14.0895000000000000
2013-01-01	7.1461600000000010
2014-01-01	5.1354600000000000
2015-01-01	2.8101900000000000
2016-01-01	3.9221100000000000