Year Percent 1996-01-01 1.2851600000000000 1997-01-01 0.9453030000000001 1998-01-01 0.7857160000000000 1999-01-01 0.6223989999999999 2000-01-01 0.5893400000000000 2001-01-01 0.8717530000000001 2002-01-01 0.9794209999999999 2003-01-01 1.2104700000000002 2004-01-01 1.3964600000000000 2005-01-01 1.4122600000000000 2006-01-01 1.1060299999999998 2007-01-01 0.0573200000000000 2008-01-01 -1.2253900000000000 2009-01-01 -0.4626750000000000 2010-01-01 -1.4465600000000000 2011-01-01 0.0896660000000000 2012-01-01 2.3400300000000000 2013-01-01 1.1044300000000000 2014-01-01 1.5102400000000000 2015-01-01 1.5108800000000000 2016-01-01 1.3291000000000000