Year Index 2010=1, Trend 1970-01-01 0.101772433659704 1971-01-01 0.108045337128817 1972-01-01 0.114379583103410 1973-01-01 0.125082715475009 1974-01-01 0.149230475309022 1975-01-01 0.174936837016872 1976-01-01 0.199899553932738 1977-01-01 0.210908938588853 1978-01-01 0.234217435374001 1979-01-01 0.261372212283539 1980-01-01 0.292851414353841 1981-01-01 0.328627234545981 1982-01-01 0.374544129548267 1983-01-01 0.413014346084464 1984-01-01 0.441150975949678 1985-01-01 0.465830345533945 1986-01-01 0.484653272700820 1987-01-01 0.508445931012283 1988-01-01 0.535055347183936 1989-01-01 0.557824586247070 1990-01-01 0.622381011839065 1991-01-01 0.654488227384613 1992-01-01 0.669165476320000 1993-01-01 0.677322791416803 1994-01-01 0.684141252341389 1995-01-01 0.700529150710122 1996-01-01 0.706327632128069 1997-01-01 0.721348716834035 1998-01-01 0.748654637931332 1999-01-01 0.774463444532854 2000-01-01 0.799788540288198 2001-01-01 0.843976550334646 2002-01-01 0.867233939019112 2003-01-01 0.869183066956814 2004-01-01 0.878091871593958 2005-01-01 0.896889007178172 2006-01-01 0.928118110829004 2007-01-01 0.952888977165736 2008-01-01 0.977082218102336 2009-01-01 0.974046110446766 2010-01-01 1.000000000000000