Year Index 2005=1, Trend 1970-01-01 0.310692687406911 1971-01-01 0.337794372179754 1972-01-01 0.355422511113005 1973-01-01 0.381361242173400 1974-01-01 0.420934067083068 1975-01-01 0.462766653371057 1976-01-01 0.482221083604721 1977-01-01 0.511777332326091 1978-01-01 0.539544057978685 1979-01-01 0.568531096880153 1980-01-01 0.620584147170911 1981-01-01 0.663642457552604 1982-01-01 0.709045025279073 1983-01-01 0.730539909358080 1984-01-01 0.749656412765194 1985-01-01 0.767905153405124 1986-01-01 0.800042496673698 1987-01-01 0.834434732888900 1988-01-01 0.834547140904028 1989-01-01 0.847492854285261 1990-01-01 0.889130395328669 1991-01-01 0.933275984375933 1992-01-01 0.983218782879606 1993-01-01 1.022352599627000 1994-01-01 0.996967228751091 1995-01-01 1.016741436786380 1996-01-01 1.035911377484230 1997-01-01 1.002602261080570 1998-01-01 0.985126102138396 1999-01-01 0.981947516702214 2000-01-01 0.977206895433887 2001-01-01 0.994923431496731 2002-01-01 1.015174010190360 2003-01-01 1.019642756767780 2004-01-01 1.009333339680870 2005-01-01 1.000000000000000 2006-01-01 0.987990530788719 2007-01-01 0.985178695989173 2008-01-01 1.032780314310120 2009-01-01 1.058623859598980 2010-01-01 1.058408838923320