Year	Percent
1996-01-01	5.6745800000000010
1997-01-01	8.5661200000000000
1998-01-01	6.6415899999999990
1999-01-01	6.9655900000000000
2000-01-01	6.6852199999999990
2001-01-01	5.7336800000000006
2002-01-01	8.2567399999999990
2003-01-01	8.5166899999999990
2004-01-01	7.6126100000000010
2005-01-01	7.5081800000000000
2006-01-01	7.2478800000000000
2007-01-01	6.9790700000000000
2008-01-01	6.4924900000000000
2009-01-01	6.9542500000000000
2010-01-01	6.6819500000000000
2011-01-01	5.5025000000000000
2012-01-01	5.4064000000000000
2013-01-01	5.4867599999999990
2014-01-01	5.8837800000000010
2015-01-01	5.5619400000000000
2016-01-01	5.8069200000000000