Year Percent 1994-01-01 1.2029299999999998 1995-01-01 0.9704760000000000 1996-01-01 1.1527000000000000 1997-01-01 1.4562200000000000 1998-01-01 1.5809799999999998 1999-01-01 1.5889200000000000 2000-01-01 1.5446700000000000 2001-01-01 1.5537200000000000 2002-01-01 1.5085400000000000 2003-01-01 1.4792700000000000 2004-01-01 1.4768299999999999 2005-01-01 1.4594000000000000 2006-01-01 1.4073300000000000 2007-01-01 1.3973799999999998 2008-01-01 1.4088300000000000 2009-01-01 1.3733000000000000 2010-01-01 1.4031900000000000 2011-01-01 1.4503400000000000 2012-01-01 1.4363800000000000 2013-01-01 1.4194700000000000 2014-01-01 1.3472500000000000 2015-01-01 1.2853200000000000 2016-01-01 1.4779799999999998