Year	Index 2010=1
1980-01-01	0.319758231754354
1981-01-01	0.347539358756546
1982-01-01	0.377225100633648
1983-01-01	0.406574896650072
1984-01-01	0.422267687066929
1985-01-01	0.427717319233687
1986-01-01	0.469404902908183
1987-01-01	0.491773594254069
1988-01-01	0.506726385495408
1989-01-01	0.540075354368986
1990-01-01	0.606197770702221
1991-01-01	0.647592059918604
1992-01-01	0.703547237608659
1993-01-01	0.755761950409070
1994-01-01	0.754256792387796
1995-01-01	0.761704276875180
1996-01-01	0.787434072040591
1997-01-01	0.798304605318228
1998-01-01	0.793029279679550
1999-01-01	0.781361093233918
2000-01-01	0.792106323859566
2001-01-01	0.808115332929576
2002-01-01	0.831024438060185
2003-01-01	0.852997153331983
2004-01-01	0.868510711447803
2005-01-01	0.889845945957752
2006-01-01	0.912440008673049
2007-01-01	0.950121709339157
2008-01-01	1.016786169864710
2009-01-01	1.046277832142930
2010-01-01	1.000000000000000