Year	Index
1996-01-01	0.33094800000000000
1997-01-01	0.30402100000000000
1998-01-01	0.32871300000000003
1999-01-01	0.28034600000000000
2000-01-01	0.23381400000000000
2001-01-01	0.27559700000000000
2002-01-01	0.26522199999999996
2003-01-01	0.29536500000000000
2004-01-01	0.26727700000000000
2005-01-01	0.23048000000000002
2006-01-01	0.18608200000000000
2007-01-01	0.28607700000000000
2008-01-01	0.32496100000000000
2009-01-01	0.25284300000000000
2010-01-01	0.10115500000000000
2011-01-01	0.33367900000000000
2012-01-01	0.27060300000000004
2013-01-01	0.28238900000000000