Year Index 2010=1 1970-01-01 0.378389578469448 1971-01-01 0.413564483014759 1972-01-01 0.433278737696368 1973-01-01 0.462444531932032 1974-01-01 0.502230751781777 1975-01-01 0.529736383810227 1976-01-01 0.536926359669010 1977-01-01 0.564469880724286 1978-01-01 0.591796535707056 1979-01-01 0.611232306818133 1980-01-01 0.662844445064448 1981-01-01 0.693490680045818 1982-01-01 0.724852565709785 1983-01-01 0.728823280834160 1984-01-01 0.735162826443661 1985-01-01 0.741199535685021 1986-01-01 0.781203571176111 1987-01-01 0.828311205886833 1988-01-01 0.826662707076312 1989-01-01 0.823083835742808 1990-01-01 0.854907061368896 1991-01-01 0.882558587006448 1992-01-01 0.948912374247360 1993-01-01 0.998354591603302 1994-01-01 0.971757071431144 1995-01-01 1.007338023624570 1996-01-01 1.026553467125100 1997-01-01 0.989636699992630 1998-01-01 0.998250639901960 1999-01-01 0.997576184424978 2000-01-01 0.980300257079662 2001-01-01 0.985024039867559 2002-01-01 0.999670762442023 2003-01-01 0.986824200944794 2004-01-01 0.956222567287083 2005-01-01 0.928658989317376 2006-01-01 0.892128727791984 2007-01-01 0.876347740008052 2008-01-01 0.945114780007330 2009-01-01 1.092706929020930 2010-01-01 1.000000000000000