Year Index 2003-01-01 0.46998599999999996 2004-01-01 0.45118700000000000 2005-01-01 0.35095100000000000 2006-01-01 0.40999200000000000 2007-01-01 0.38007600000000000 2008-01-01 0.36461200000000000 2009-01-01 0.33170200000000000 2010-01-01 0.24043499999999998 2011-01-01 0.30641700000000000 2012-01-01 0.24376399999999998 2013-01-01 0.22244600000000000