Year Index 2005=1, Trend 1970-01-01 0.243703968590560 1971-01-01 0.266330175846529 1972-01-01 0.283157396988513 1973-01-01 0.306381259842475 1974-01-01 0.339770278732018 1975-01-01 0.375802959724404 1976-01-01 0.397969874952871 1977-01-01 0.422443743813150 1978-01-01 0.447629578384350 1979-01-01 0.474324381778230 1980-01-01 0.518253545456553 1981-01-01 0.560218254870413 1982-01-01 0.606499204092135 1983-01-01 0.634764956475633 1984-01-01 0.656820409891301 1985-01-01 0.679853474175283 1986-01-01 0.704074742956984 1987-01-01 0.727304699363179 1988-01-01 0.738491155119713 1989-01-01 0.753650658822260 1990-01-01 0.789631112975332 1991-01-01 0.827794113855373 1992-01-01 0.874029118906279 1993-01-01 0.904723586969183 1994-01-01 0.902515635890000 1995-01-01 0.914540189064339 1996-01-01 0.927378466885634 1997-01-01 0.910665022698247 1998-01-01 0.909573508211089 1999-01-01 0.926193121852572 2000-01-01 0.934285165809450 2001-01-01 0.951269821974501 2002-01-01 0.971222653201282 2003-01-01 0.987045090130617 2004-01-01 0.991605909287024 2005-01-01 1.000000000000000 2006-01-01 1.007691520716070 2007-01-01 1.019577167941190 2008-01-01 1.054035954351660 2009-01-01 1.076201784162120 2010-01-01 1.085999158097680