Year	Index 2010=1
1970-01-01	0.373275805923780
1971-01-01	0.407397534964714
1972-01-01	0.432450271663651
1973-01-01	0.464983042738634
1974-01-01	0.505857414640514
1975-01-01	0.539105454523025
1976-01-01	0.550574509477388
1977-01-01	0.569393923056875
1978-01-01	0.590184815875650
1979-01-01	0.610462504307567
1980-01-01	0.657976509854899
1981-01-01	0.690368851025989
1982-01-01	0.724977219170410
1983-01-01	0.726595924234588
1984-01-01	0.734691526187548
1985-01-01	0.739576956955617
1986-01-01	0.763724894877659
1987-01-01	0.788442781737474
1988-01-01	0.791326833053352
1989-01-01	0.794518354407946
1990-01-01	0.817174621702326
1991-01-01	0.845410010081212
1992-01-01	0.907487518195616
1993-01-01	0.949494195920366
1994-01-01	0.949325750894199
1995-01-01	0.968473918394315
1996-01-01	0.975206340245846
1997-01-01	0.959877053587053
1998-01-01	0.959500988032672
1999-01-01	0.964262118356166
2000-01-01	0.965421866883903
2001-01-01	0.968223545284688
2002-01-01	0.971953323687223
2003-01-01	0.976258417014838
2004-01-01	0.961572897932316
2005-01-01	0.951591999183212
2006-01-01	0.931434198246949
2007-01-01	0.926142310748672
2008-01-01	0.955764567692370
2009-01-01	1.031300481966850
2010-01-01	1.000000000000000