Year Percent 1996-01-01 1.5415600000000000 1997-01-01 0.6217130000000000 1998-01-01 0.5518350000000001 1999-01-01 0.5146630000000000 2000-01-01 0.4509120000000000 2001-01-01 0.4509120000000000 2002-01-01 0.4509120000000000 2003-01-01 0.0995360000000000 2004-01-01 0.4460290000000000 2005-01-01 0.9642990000000000 2006-01-01 1.0773200000000000 2007-01-01 1.5135399999999999 2008-01-01 1.2139900000000000 2009-01-01 0.9912020000000000 2010-01-01 1.2002400000000000 2011-01-01 1.0850400000000000 2012-01-01 0.8241129999999999 2013-01-01 0.6667489999999999 2014-01-01 0.6047080000000000 2015-01-01 0.5302370000000000 2016-01-01 0.6713650000000000