Year	Index
1996-01-01	0.22576300000000002
1997-01-01	0.22635300000000003
1998-01-01	0.26702000000000000
1999-01-01	0.27948500000000000
2000-01-01	0.32222100000000000
2001-01-01	0.27672700000000000
2002-01-01	0.28711600000000000
2003-01-01	0.26480700000000000
2004-01-01	0.24217600000000003
2005-01-01	0.28471799999999997
2006-01-01	0.17598699999999998
2007-01-01	0.17259300000000000
2008-01-01	0.19476400000000002
2009-01-01	0.19197200000000000
2010-01-01	0.18602100000000000