Year	Index 2010=1
1981-01-01	0.323731637134606
1982-01-01	0.376085965995889
1983-01-01	0.421429835533015
1984-01-01	0.448491508599541
1985-01-01	0.481154174116756
1986-01-01	0.503157943772224
1987-01-01	0.520965289675020
1988-01-01	0.536673863376367
1989-01-01	0.570975261332828
1990-01-01	0.616486773174881
1991-01-01	0.667864904663872
1992-01-01	0.683208765436288
1993-01-01	0.703147517045772
1994-01-01	0.679348881158369
1995-01-01	0.686707134788615
1996-01-01	0.721269553078705
1997-01-01	0.738540945489400
1998-01-01	0.736238728630105
1999-01-01	0.747872591258481
2000-01-01	0.730177915720278
2001-01-01	0.754128415415476
2002-01-01	0.783369565085401
2003-01-01	0.830385358882280
2004-01-01	0.846832416724729
2005-01-01	0.860767415294766
2006-01-01	0.862857876792640
2007-01-01	0.885337696075594
2008-01-01	0.956673907238795
2009-01-01	1.046690885907200
2010-01-01	1.000000000000000