Year Percent 1992-01-01 0.5985800000000000 1993-01-01 0.5847630000000000 1994-01-01 0.6073590000000000 1995-01-01 0.6033050000000000 1996-01-01 0.6289910000000000 1997-01-01 0.6094870000000000 1998-01-01 0.6005000000000000 1999-01-01 0.5875040000000000 2000-01-01 0.6072600000000000 2001-01-01 0.6245400000000000 2002-01-01 0.6359770000000000 2003-01-01 0.6297229999999999 2004-01-01 0.6746970000000000 2005-01-01 0.6554750000000000 2006-01-01 0.6882550000000001 2007-01-01 0.7406800000000000 2008-01-01 0.7367580000000000 2009-01-01 0.8301200000000001 2010-01-01 0.9581260000000000 2011-01-01 0.9505430000000000 2012-01-01 0.9851540000000001 2013-01-01 1.0415100000000000 2014-01-01 1.1139700000000001 2015-01-01 1.1474500000000000 2016-01-01 1.1745200000000000