Year	Index
1999-01-01	-0.003396
2000-01-01	-0.087288
2001-01-01	-0.104564
2002-01-01	-0.084733
2003-01-01	-0.088773
2004-01-01	-0.088805
2005-01-01	-0.115522
2006-01-01	-0.110172
2007-01-01	-0.120332
2008-01-01	-0.111892
2009-01-01	-0.088224
2010-01-01	-0.084385
2011-01-01	-0.089668
2012-01-01	-0.087560
2013-01-01	-0.081116
2014-01-01	-0.071536