Year	Index
1997-01-01	0.08823700000000000
1998-01-01	0.67678900000000010
1999-01-01	0.37995900000000000
2000-01-01	0.26827500000000000
2001-01-01	0.17310999999999999
2002-01-01	0.19681600000000002
2003-01-01	0.11369200000000000
2004-01-01	0.08514600000000000
2005-01-01	0.14230000000000000
2006-01-01	0.19463900000000000
2007-01-01	0.24490500000000000
2008-01-01	0.16169000000000000
2009-01-01	0.28614700000000000
2010-01-01	0.29294400000000000
2011-01-01	0.28713000000000000
2012-01-01	0.20185600000000000
2013-01-01	0.22399000000000002
2014-01-01	0.23100600000000000