Year	Index 2010=1
1981-01-01	0.347700686485735
1982-01-01	0.417327829617904
1983-01-01	0.474778669626628
1984-01-01	0.520358821447146
1985-01-01	0.567820211141150
1986-01-01	0.591494132734399
1987-01-01	0.613293308806319
1988-01-01	0.629708849282374
1989-01-01	0.663996575379084
1990-01-01	0.710840343918811
1991-01-01	0.768455396033770
1992-01-01	0.803154655188433
1993-01-01	0.794887974540947
1994-01-01	0.763376670626209
1995-01-01	0.769909778218355
1996-01-01	0.795594075732148
1997-01-01	0.804897518945089
1998-01-01	0.797491646313153
1999-01-01	0.823736571835500
2000-01-01	0.795434118209267
2001-01-01	0.807590759743025
2002-01-01	0.841317320620985
2003-01-01	0.876430131772714
2004-01-01	0.871431058551356
2005-01-01	0.898690492175623
2006-01-01	0.906479383840907
2007-01-01	0.921792946254690
2008-01-01	0.952020927851787
2009-01-01	1.007831657542550
2010-01-01	1.000000000000000