Year Percent 1996-01-01 4.5223900000000010 1997-01-01 6.9982300000000000 1998-01-01 9.0944300000000010 1999-01-01 5.1436199999999990 2000-01-01 7.2446100000000010 2001-01-01 7.5317800000000000 2002-01-01 23.3606000000000000 2003-01-01 27.4777000000000000 2004-01-01 16.4512000000000000 2005-01-01 12.4124000000000000 2006-01-01 25.0806000000000000 2007-01-01 9.4057600000000000 2008-01-01 7.3282899999999990 2009-01-01 7.2653399999999990 2010-01-01 8.6370700000000000 2011-01-01 8.3904300000000000 2012-01-01 6.5418199999999995 2013-01-01 4.3774900000000000 2014-01-01 3.8039199999999997 2015-01-01 15.1357000000000000 2016-01-01 4.8659800000000000