Year Index 1996-01-01 0.29524700000000000 1997-01-01 0.22399499999999997 1998-01-01 0.25951500000000000 1999-01-01 0.19916099999999998 2000-01-01 0.17092700000000000 2001-01-01 0.21188900000000000 2002-01-01 0.23777500000000000 2003-01-01 0.28477199999999997 2004-01-01 0.25653700000000000 2005-01-01 0.25059000000000003 2006-01-01 0.24396300000000000 2007-01-01 0.19575200000000000 2008-01-01 0.14344400000000002 2009-01-01 0.29446600000000000 2010-01-01 0.30608600000000000 2011-01-01 0.25321800000000000 2012-01-01 0.29760200000000000 2013-01-01 0.27655700000000000 2014-01-01 0.32625400000000000