Year	Index
1996-01-01	0.17831100000000000
1997-01-01	0.22861100000000000
1998-01-01	0.25232899999999997
1999-01-01	0.21190500000000000
2000-01-01	0.27366999999999997
2001-01-01	0.33929800000000000
2002-01-01	0.28652000000000000
2003-01-01	0.31842200000000000
2004-01-01	0.25584200000000000
2005-01-01	0.28956900000000000
2006-01-01	0.33206100000000000
2007-01-01	0.33665700000000004
2008-01-01	0.30003200000000000
2009-01-01	0.20883300000000000
2010-01-01	0.20374000000000000
2011-01-01	0.34080800000000000
2012-01-01	0.20656599999999997
2013-01-01	0.21206900000000000