Year Percent 1996-01-01 -2.2169600000000000 1997-01-01 6.2737900000000000 1998-01-01 5.8389100000000000 1999-01-01 18.8070000000000020 2000-01-01 20.6555000000000000 2001-01-01 11.6548000000000000 2002-01-01 13.5149000000000000 2003-01-01 14.7792000000000000 2004-01-01 14.8675000000000000 2005-01-01 18.3496000000000000 2006-01-01 13.5407000000000000 2007-01-01 1.8557900000000000 2008-01-01 -42.0831000000000000 2009-01-01 -4.6561699999999995 2010-01-01 5.5897700000000000 2011-01-01 8.0559600000000000 2012-01-01 -4.6080500000000000 2013-01-01 5.2245800000000004 2014-01-01 5.2467900000000000 2015-01-01 9.1990199999999990 2016-01-01 2.2148800000000000