Year Percent 1985-01-01 0.75834099999999990 1986-01-01 0.75834099999999990 1987-01-01 0.75834099999999990 1988-01-01 0.75834099999999990 1989-01-01 0.75834099999999990 1990-01-01 0.75834099999999990 1991-01-01 -0.06107800000000000 1992-01-01 0.03409500000000000 1993-01-01 0.94964799999999990 1994-01-01 0.20179500000000000 1995-01-01 0.25815400000000000 1996-01-01 0.57092900000000000 1997-01-01 -0.03196200000000000 1998-01-01 0.05894000000000000 1999-01-01 -0.09157699999999999 2000-01-01 -0.07516300000000000 2001-01-01 -0.47549100000000000 2002-01-01 -0.26507600000000003 2003-01-01 -0.30207399999999995 2004-01-01 0.13302800000000000 2005-01-01 0.12095999999999998 2006-01-01 -0.09469800000000000 2007-01-01 -0.12284000000000000 2008-01-01 -0.14551300000000000 2009-01-01 -0.10081300000000000 2010-01-01 0.31661800000000000 2011-01-01 0.10436400000000001 2012-01-01 0.53526500000000000 2013-01-01 0.17478000000000000 2014-01-01 -0.02459900000000000 2015-01-01 -0.11421900000000000 2016-01-01 -0.12038499999999999