Year	Index 2010=1
1980-01-01	0.424994001005452
1981-01-01	0.475365574342037
1982-01-01	0.531675640327344
1983-01-01	0.580838613208309
1984-01-01	0.607947058142241
1985-01-01	0.648736552993610
1986-01-01	0.662038965222232
1987-01-01	0.685178178501196
1988-01-01	0.703651032918687
1989-01-01	0.713657350796466
1990-01-01	0.752741076842270
1991-01-01	0.772087640366806
1992-01-01	0.791450733374402
1993-01-01	0.801929319760364
1994-01-01	0.794281379419662
1995-01-01	0.797865768691151
1996-01-01	0.803646214240896
1997-01-01	0.794987877497436
1998-01-01	0.798152212577381
1999-01-01	0.809365286916811
2000-01-01	0.826589033382934
2001-01-01	0.852615399082074
2002-01-01	0.876578381037911
2003-01-01	0.890384096602060
2004-01-01	0.904861778658826
2005-01-01	0.922073665434409
2006-01-01	0.939165850762057
2007-01-01	0.947278092757489
2008-01-01	0.973999991990357
2009-01-01	0.992747611952984
2010-01-01	1.000000000000000