Year	Index
1996-01-01	0.36522500000000000
1997-01-01	0.29353200000000000
1998-01-01	0.25353200000000004
1999-01-01	0.18747200000000000
2000-01-01	0.18938300000000000
2001-01-01	0.20683100000000000
2002-01-01	0.28430500000000003
2003-01-01	0.32713800000000000
2004-01-01	0.34597100000000003
2005-01-01	0.26262600000000000
2006-01-01	0.29552800000000000
2007-01-01	0.29882200000000000
2008-01-01	0.26083600000000000
2009-01-01	0.27433500000000000
2010-01-01	0.25618100000000000
2011-01-01	0.28051400000000000
2012-01-01	0.35703300000000000
2013-01-01	0.37360300000000000
2014-01-01	0.39083800000000000