Year Percent 1996-01-01 63.9033000000000000 1997-01-01 23.8970000000000000 1998-01-01 -8.2437100000000000 1999-01-01 38.1364000000000000 2000-01-01 4.0212200000000000 2001-01-01 12.5002000000000000 2002-01-01 6.4997700000000000 2003-01-01 15.2534000000000000 2004-01-01 14.4416000000000000 2005-01-01 12.6679000000000000 2006-01-01 13.1741000000000000 2007-01-01 16.5023000000000000 2008-01-01 6.5182500000000000 2009-01-01 -27.3091000000000000 2010-01-01 -9.8525000000000000 2011-01-01 3.3009400000000000 2012-01-01 1.9117200000000000 2013-01-01 -0.9092870000000001 2014-01-01 -9.7667399999999990 2015-01-01 -17.5993000000000000 2016-01-01 -30.1360000000000000