Year Percent 1995-01-01 13.3333 1996-01-01 21.3333 1997-01-01 11.2500 1998-01-01 10.5917 1999-01-01 17.3125 2000-01-01 13.4583 2001-01-01 13.7917 2002-01-01 20.6250 2003-01-01 19.3950 2004-01-01 29.4583 2005-01-01 17.6350 2006-01-01 16.1000 2007-01-01 22.2000 2008-01-01 15.6625 2009-01-01 16.5900 2010-01-01 17.8400 2011-01-01 11.0900 2012-01-01 4.2900 2013-01-01 9.0500 2014-01-01 9.8000 2015-01-01 12.9500 2016-01-01 4.5400