Year	Index 2010=1
1981-01-01	0.175822923348338
1982-01-01	0.204356618738455
1983-01-01	0.261496546146921
1984-01-01	0.293334880528549
1985-01-01	0.311363844805360
1986-01-01	0.339440966805926
1987-01-01	0.370674673407787
1988-01-01	0.408652430936762
1989-01-01	0.446448322906146
1990-01-01	0.481779088565333
1991-01-01	0.519547573203090
1992-01-01	0.579069610908654
1993-01-01	0.579130757588253
1994-01-01	0.617106908230461
1995-01-01	0.638992118237325
1996-01-01	0.676764641233591
1997-01-01	0.697688177055647
1998-01-01	0.703705631081238
1999-01-01	0.729050227712886
2000-01-01	0.751368954154820
2001-01-01	0.767584517709058
2002-01-01	0.800951385644844
2003-01-01	0.825289656235575
2004-01-01	0.861793179081999
2005-01-01	0.897255683113459
2006-01-01	0.922443972767999
2007-01-01	0.960537302161860
2008-01-01	0.987235609171515
2009-01-01	0.982070374244896
2010-01-01	1.000000000000000