Year Percent 1996-01-01 0.93610799999999990 1997-01-01 0.60373100000000000 1998-01-01 0.60030000000000000 1999-01-01 0.66917900000000000 2000-01-01 0.68276900000000000 2001-01-01 0.97716700000000000 2002-01-01 0.41856000000000004 2003-01-01 0.50818400000000000 2004-01-01 1.21939000000000000 2005-01-01 0.53898300000000000 2006-01-01 0.70069799999999990 2007-01-01 0.82317500000000000 2008-01-01 0.50345400000000000 2009-01-01 0.58763999999999990 2010-01-01 0.33541400000000000 2011-01-01 0.53199000000000000 2012-01-01 0.49968300000000000 2013-01-01 0.89980100000000010 2014-01-01 0.64819500000000000 2015-01-01 0.81297500000000000 2016-01-01 0.85328400000000000