Year	Percent
1996-01-01	4.3295600000000000
1997-01-01	10.2672000000000000
1998-01-01	6.8321000000000000
1999-01-01	5.6874000000000000
2000-01-01	6.5352400000000000
2001-01-01	7.3444600000000010
2002-01-01	7.3287100000000010
2003-01-01	6.1194400000000000
2004-01-01	4.8203200000000000
2005-01-01	4.1932000000000000
2006-01-01	4.1196100000000000
2007-01-01	3.8676500000000000
2008-01-01	3.3629200000000000
2009-01-01	3.2965900000000000
2010-01-01	3.5613000000000000
2011-01-01	3.5251099999999997
2012-01-01	3.4790500000000000
2013-01-01	3.5818800000000004
2014-01-01	3.1281800000000000
2015-01-01	4.2788100000000000
2016-01-01	3.0342700000000002