Year Index 2010=1, Trend 1969-01-01 0.102918036036506 1970-01-01 0.115117938708377 1971-01-01 0.133113628777675 1972-01-01 0.155960249975570 1973-01-01 0.172218543256036 1974-01-01 0.190041980678119 1975-01-01 0.217625335441264 1976-01-01 0.236654136308588 1977-01-01 0.284232178502768 1978-01-01 0.330710135456478 1979-01-01 0.371377972937346 1980-01-01 0.398367967644174 1981-01-01 0.436324182691358 1982-01-01 0.448596125889913 1983-01-01 0.447343646030974 1984-01-01 0.426419534954143 1985-01-01 0.423927015891206 1986-01-01 0.425098500689644 1987-01-01 0.419227031415885 1988-01-01 0.406470008392233 1989-01-01 0.413847337033901 1990-01-01 0.442387784449018 1991-01-01 0.457877753453045 1992-01-01 0.483584791115814 1993-01-01 0.506092764485886 1994-01-01 0.514124263582240 1995-01-01 0.535205758685288 1996-01-01 0.555909833000376 1997-01-01 0.577716987269456 1998-01-01 0.600515596829336 1999-01-01 0.619170574068234 2000-01-01 0.642993749680404 2001-01-01 0.679784181657288 2002-01-01 0.729065924695226 2003-01-01 0.778707852672774 2004-01-01 0.822068793346830 2005-01-01 0.819224374571314 2006-01-01 0.831628240196614 2007-01-01 0.827945529761635 2008-01-01 0.842567072582368 2009-01-01 0.912690807048795 2010-01-01 1.000000000000000