Year	Index 2010=1
1981-01-01	0.286543872948227
1982-01-01	0.336915798834709
1983-01-01	0.386247115622630
1984-01-01	0.419759291270476
1985-01-01	0.455097762445876
1986-01-01	0.480936721112315
1987-01-01	0.503182767186343
1988-01-01	0.525082780351756
1989-01-01	0.558557654619813
1990-01-01	0.603405780596932
1991-01-01	0.653772363983347
1992-01-01	0.689187268892556
1993-01-01	0.697338344558242
1994-01-01	0.689205812695000
1995-01-01	0.699520636153163
1996-01-01	0.728505481310197
1997-01-01	0.746542428766130
1998-01-01	0.742465039829884
1999-01-01	0.763286522101613
2000-01-01	0.754166662583618
2001-01-01	0.770784357217224
2002-01-01	0.798984223743041
2003-01-01	0.835550396690382
2004-01-01	0.849720292549174
2005-01-01	0.875581511268468
2006-01-01	0.886247078797173
2007-01-01	0.911706078634099
2008-01-01	0.952387024598713
2009-01-01	1.006388224159910
2010-01-01	1.000000000000000