Year Index 2008-01-01 0.000000000000000000 2009-01-01 -0.070372000000000000 2010-01-01 -0.052410000000000005 2011-01-01 -0.048787000000000000 2012-01-01 -0.052539999999999996 2013-01-01 -0.074140000000000000 2014-01-01 -0.059954999999999994