Year	Index 2010=1
1980-01-01	0.460705878475125
1981-01-01	0.498058726840771
1982-01-01	0.509693211406713
1983-01-01	0.505793250678925
1984-01-01	0.518146588041119
1985-01-01	0.546198002088141
1986-01-01	0.569559624122589
1987-01-01	0.600004625370152
1988-01-01	0.621395808057827
1989-01-01	0.648518302633791
1990-01-01	0.707154509172061
1991-01-01	0.760025322930430
1992-01-01	0.718928215677440
1993-01-01	0.711605440811069
1994-01-01	0.699916445114846
1995-01-01	0.714182845724266
1996-01-01	0.710150982507583
1997-01-01	0.726203808194952
1998-01-01	0.769210016759430
1999-01-01	0.768854639689685
2000-01-01	0.765216142071231
2001-01-01	0.774219497933129
2002-01-01	0.789780370334342
2003-01-01	0.798240392030795
2004-01-01	0.793601813983081
2005-01-01	0.815596216832034
2006-01-01	0.847759561786668
2007-01-01	0.859861217142526
2008-01-01	0.883436251618646
2009-01-01	0.983828938003007
2010-01-01	1.000000000000000