Year	Index 2010=1
1978-01-01	0.384041449416154
1979-01-01	0.368002398720740
1980-01-01	0.383589759600952
1981-01-01	0.432750526599113
1982-01-01	0.463910888432390
1983-01-01	0.451872385821056
1984-01-01	0.451856465640668
1985-01-01	0.484322741246115
1986-01-01	0.518025675670080
1987-01-01	0.544317942438888
1988-01-01	0.559222796775878
1989-01-01	0.516519729735984
1990-01-01	0.522882245850514
1991-01-01	0.512753692611817
1992-01-01	0.495314571408908
1993-01-01	0.506080438420694
1994-01-01	0.497132416164050
1995-01-01	0.487335774268136
1996-01-01	0.482629459273557
1997-01-01	0.499365350551730
1998-01-01	0.554382896117188
1999-01-01	0.571296645070294
2000-01-01	0.557328456232646
2001-01-01	0.574672453063353
2002-01-01	0.591845486719326
2003-01-01	0.588642901819374
2004-01-01	0.595290695896049
2005-01-01	0.632534070218037
2006-01-01	0.731875326261722
2007-01-01	0.817511103031440
2008-01-01	0.894185833278103
2009-01-01	0.939743354937766
2010-01-01	1.000000000000000