Year Percent 1992-01-01 0.9125390000000000 1993-01-01 0.8579629999999999 1994-01-01 0.5792700000000000 1995-01-01 0.5394800000000001 1996-01-01 0.5767479999999999 1997-01-01 0.5686520000000000 1998-01-01 0.6835430000000000 1999-01-01 0.8256200000000000 2000-01-01 0.9933830000000000 2001-01-01 0.9108520000000000 2002-01-01 1.0534000000000000 2003-01-01 1.1250799999999999 2004-01-01 1.2896600000000000 2005-01-01 1.2155200000000002 2006-01-01 0.9805050000000000 2007-01-01 1.0125400000000000 2008-01-01 0.9739120000000001 2009-01-01 1.0091600000000000 2010-01-01 1.0185500000000000 2011-01-01 0.9651139999999999 2012-01-01 0.9816729999999999 2013-01-01 1.0417000000000000 2014-01-01 1.0894400000000000 2015-01-01 1.0881600000000000 2016-01-01 1.1042600000000000