Year Percent 1980-01-01 0.09987400000000000 1981-01-01 0.09987400000000000 1982-01-01 0.09987400000000000 1983-01-01 0.09987400000000000 1984-01-01 0.09987400000000000 1985-01-01 -0.00564900000000000 1986-01-01 -0.30702399999999996 1987-01-01 -0.30702399999999996 1988-01-01 -0.30702399999999996 1989-01-01 -0.30702399999999996 1990-01-01 -0.30702399999999996 1991-01-01 -0.30702399999999996 1992-01-01 -0.30702399999999996 1993-01-01 0.19270600000000000 1994-01-01 0.00877100000000000 1995-01-01 0.00877100000000000 1996-01-01 0.00877100000000000 1997-01-01 0.76513500000000000 1998-01-01 0.26110200000000000 1999-01-01 0.26110200000000000 2000-01-01 0.26110200000000000 2001-01-01 0.91575200000000000 2002-01-01 1.17011000000000000 2003-01-01 -0.02908400000000000 2004-01-01 0.50397900000000000 2005-01-01 0.50397900000000000 2006-01-01 0.32302200000000000 2007-01-01 -0.10656300000000000 2008-01-01 -0.10656300000000000 2009-01-01 0.60966599999999990 2010-01-01 0.68638100000000000 2011-01-01 0.64657600000000000 2012-01-01 1.09089000000000000 2013-01-01 1.34490000000000000 2014-01-01 1.64412000000000000 2015-01-01 0.02432800000000000 2016-01-01 0.13601700000000000