Year	Percent
1996-01-01	4.2351400000000000
1997-01-01	3.4002000000000000
1998-01-01	3.2064900000000000
1999-01-01	5.9840000000000000
2000-01-01	4.8363700000000000
2001-01-01	5.1112800000000010
2002-01-01	5.8077800000000000
2003-01-01	6.7198300000000000
2004-01-01	6.6554300000000000
2005-01-01	5.7864400000000000
2006-01-01	6.9452200000000000
2007-01-01	5.3235400000000000
2008-01-01	4.1848400000000000
2009-01-01	5.2459000000000000
2010-01-01	3.8969199999999997
2011-01-01	4.2338500000000000
2012-01-01	3.3853199999999997
2013-01-01	3.7347000000000000
2014-01-01	3.3500000000000000
2015-01-01	3.2965300000000000
2016-01-01	2.2259000000000000