Year Index 2010=1, Trend 1970-01-01 0.0524416137682441 1971-01-01 0.0615629401212984 1972-01-01 0.0706450823111022 1973-01-01 0.0787539758146802 1974-01-01 0.0883733768884540 1975-01-01 0.1013332038468630 1976-01-01 0.1110253319700670 1977-01-01 0.1198953824700050 1978-01-01 0.1329221692032420 1979-01-01 0.1392591744469920 1980-01-01 0.1524200651702190 1981-01-01 0.1791087737621620 1982-01-01 0.2088316489839420 1983-01-01 0.2384834193752930 1984-01-01 0.2592461910679150 1985-01-01 0.2893662504069190 1986-01-01 0.3247272624644730 1987-01-01 0.3629671950591670 1988-01-01 0.3823898178684980 1989-01-01 0.3865229249175440 1990-01-01 0.4045857643204890 1991-01-01 0.4172358476532010 1992-01-01 0.4224282988048910 1993-01-01 0.4317745206823750 1994-01-01 0.4407256589940390 1995-01-01 0.4656876368831870 1996-01-01 0.5071503868430900 1997-01-01 0.5422329107475400 1998-01-01 0.5895565101326200 1999-01-01 0.6233239647955660 2000-01-01 0.6548263916247320 2001-01-01 0.6727826727157720 2002-01-01 0.6892118874101170 2003-01-01 0.6881463326965740 2004-01-01 0.7088215476672460 2005-01-01 0.7460332749159030 2006-01-01 0.7855455665113200 2007-01-01 0.8416536167624410 2008-01-01 0.9082081842775900 2009-01-01 0.9657849870740300 2010-01-01 1.0000000000000000