Year Index 1996-01-01 0.04186700000000000 1997-01-01 0.33843400000000000 1998-01-01 0.42550299999999996 1999-01-01 0.35885400000000000 2000-01-01 0.34256600000000000 2001-01-01 0.36371100000000000 2002-01-01 0.34204700000000000 2003-01-01 0.33987200000000000 2004-01-01 0.33886300000000000 2005-01-01 0.31854099999999996 2006-01-01 0.35033500000000000 2007-01-01 0.30516000000000000 2008-01-01 0.33203800000000000 2009-01-01 0.33779699999999996 2010-01-01 0.29980300000000004 2011-01-01 0.25490799999999997 2012-01-01 0.25937200000000000 2013-01-01 0.28564700000000000 2014-01-01 0.24257700000000000