Year Percent 1985-01-01 0.049082000000000000 1986-01-01 0.080551000000000000 1987-01-01 0.128479999999999980 1988-01-01 0.439172000000000000 1989-01-01 0.326665000000000000 1990-01-01 0.063713000000000000 1991-01-01 0.199963000000000000 1992-01-01 0.576174000000000000 1993-01-01 0.882501000000000000 1994-01-01 0.010712000000000001 1995-01-01 0.092633000000000010 1996-01-01 -0.407217000000000000 1997-01-01 0.331341000000000000 1998-01-01 -0.536319000000000000 1999-01-01 1.125120000000000100 2000-01-01 -0.052385000000000000 2001-01-01 0.180273000000000000 2002-01-01 -0.014679000000000000 2003-01-01 -0.246614000000000000 2004-01-01 0.457031000000000000 2005-01-01 0.360778000000000040 2006-01-01 0.211046000000000000 2007-01-01 0.184974000000000000 2008-01-01 -0.111207999999999990 2009-01-01 -0.085319000000000000 2010-01-01 0.214024000000000000 2011-01-01 0.146538000000000000 2012-01-01 0.709969000000000000 2013-01-01 0.718918000000000100 2014-01-01 0.523889000000000000 2015-01-01 -0.115144000000000010 2016-01-01 0.384619000000000000