Year Percent 1996-01-01 12.662600 1997-01-01 12.497400 1998-01-01 -10.026500 1999-01-01 3.759410 2000-01-01 -0.655266 2001-01-01 -13.629900 2002-01-01 -16.063700 2003-01-01 -14.601800 2004-01-01 17.116200 2005-01-01 16.511400 2006-01-01 12.532600 2007-01-01 15.632800 2008-01-01 6.028190 2009-01-01 -0.392787 2010-01-01 -7.631330 2011-01-01 -46.610600 2012-01-01 -85.064200 2013-01-01 33.227000 2014-01-01 -13.370000 2015-01-01 -29.242400 2016-01-01 0.756117