Year	Index 2010=1
1988-01-01	0.744837431372287
1989-01-01	0.762659055328281
1990-01-01	0.786719744092258
1991-01-01	0.821247194442312
1992-01-01	0.856625024702638
1993-01-01	0.886037002422488
1994-01-01	0.895961480173485
1995-01-01	0.883817642613362
1996-01-01	0.883286598739333
1997-01-01	0.880714293724717
1998-01-01	0.882216366733784
1999-01-01	0.883033449259444
2000-01-01	0.873946838962079
2001-01-01	0.881729688777439
2002-01-01	0.886671485580920
2003-01-01	0.898560956165372
2004-01-01	0.892360745508459
2005-01-01	0.904650179349754
2006-01-01	0.909792992242356
2007-01-01	0.919805886115531
2008-01-01	0.943995015505844
2009-01-01	1.001768596014040
2010-01-01	1.000000000000000