Year	Index
1996-01-01	0.21914499999999998
1997-01-01	0.30001600000000000
1998-01-01	0.26288600000000000
1999-01-01	0.32349300000000000
2000-01-01	0.25457199999999996
2001-01-01	0.31625900000000000
2002-01-01	0.37019700000000000
2003-01-01	0.36741100000000000
2004-01-01	0.40585900000000000
2005-01-01	0.30398700000000000
2006-01-01	0.36440800000000000
2007-01-01	0.33681200000000000
2008-01-01	0.35072300000000000
2009-01-01	0.35733100000000000
2010-01-01	0.34186400000000000