Year	Index 2010=1
1975-01-01	0.280351556479871
1976-01-01	0.320239941997908
1977-01-01	0.339821989149270
1978-01-01	0.347226428066989
1979-01-01	0.369156393335393
1980-01-01	0.406888892388177
1981-01-01	0.462368833478821
1982-01-01	0.499281480668217
1983-01-01	0.533384491298646
1984-01-01	0.575634627763331
1985-01-01	0.614618238341365
1986-01-01	0.642727786407558
1987-01-01	0.673422725410241
1988-01-01	0.707142948829665
1989-01-01	0.749958689666367
1990-01-01	0.803738881692036
1991-01-01	0.859280978995008
1992-01-01	0.844860835495829
1993-01-01	0.801207805637291
1994-01-01	0.782728880366601
1995-01-01	0.798963179604493
1996-01-01	0.804509786859895
1997-01-01	0.796155863308385
1998-01-01	0.803767188690900
1999-01-01	0.809664762657163
2000-01-01	0.811357151916301
2001-01-01	0.837100591739587
2002-01-01	0.847666683297471
2003-01-01	0.861567394372825
2004-01-01	0.862529175394420
2005-01-01	0.880657551691698
2006-01-01	0.887087435488646
2007-01-01	0.886985611552200
2008-01-01	0.938147125380117
2009-01-01	1.015401671195310
2010-01-01	1.000000000000000