Year Percent 1996-01-01 -0.43097900000000000 1997-01-01 0.02611700000000000 1998-01-01 -0.53388100000000000 1999-01-01 -0.74904600000000000 2000-01-01 0.08815000000000000 2001-01-01 -0.06890700000000001 2002-01-01 -0.69358999999999990 2003-01-01 -0.75587900000000000 2004-01-01 -0.14821900000000002 2005-01-01 0.06056400000000000 2006-01-01 0.50114200000000000 2007-01-01 0.43555600000000005 2008-01-01 0.27904900000000000 2009-01-01 -0.13552600000000000 2010-01-01 0.21894800000000000 2011-01-01 0.25581100000000000 2012-01-01 0.27637700000000000 2013-01-01 0.29318700000000000 2014-01-01 0.31250200000000000 2015-01-01 0.29578200000000000 2016-01-01 0.25530900000000000