Year	Percent
1996-01-01	7.8858000000000000
1997-01-01	4.8678700000000000
1998-01-01	7.6862400000000000
1999-01-01	5.2888800000000010
2000-01-01	3.8870800000000000
2001-01-01	6.3621900000000000
2002-01-01	8.1487100000000010
2003-01-01	7.8882500000000000
2004-01-01	6.9065199999999995
2005-01-01	9.2706200000000000
2006-01-01	8.6716199999999990
2007-01-01	9.7219100000000010
2008-01-01	7.9768200000000000
2009-01-01	7.6159300000000005
2010-01-01	7.9171300000000000
2011-01-01	7.4151100000000000
2012-01-01	6.4325600000000000
2013-01-01	6.6728100000000010
2014-01-01	6.0355500000000000
2015-01-01	6.4927600000000000
2016-01-01	6.7436399999999990