Year Percent 1996-01-01 11.7146000000000000 1997-01-01 8.9648700000000000 1998-01-01 12.6148000000000000 1999-01-01 7.3418700000000000 2000-01-01 12.5546000000000000 2001-01-01 8.0335300000000000 2002-01-01 11.8128000000000000 2003-01-01 11.7255000000000000 2004-01-01 11.3019000000000000 2005-01-01 9.6008800000000000 2006-01-01 11.9337000000000000 2007-01-01 14.0882000000000000 2008-01-01 7.1869200000000000 2009-01-01 3.4148099999999997 2010-01-01 -2.7204099999999998 2011-01-01 -12.5847000000000000 2012-01-01 -23.3552000000000000 2013-01-01 -117.6729999999999900 2014-01-01 -2.4398800000000000 2015-01-01 3.0778000000000000 2016-01-01 7.6663300000000000