Year Index 2010=1, Trend 1971-01-01 0.142748801665227 1972-01-01 0.152077387565423 1973-01-01 0.166008381217745 1974-01-01 0.197426807845552 1975-01-01 0.234151958706050 1976-01-01 0.257527177440609 1977-01-01 0.277395742604108 1978-01-01 0.293157671637710 1979-01-01 0.305388434864974 1980-01-01 0.334850510123870 1981-01-01 0.367496825533838 1982-01-01 0.430347019554480 1983-01-01 0.479421595899738 1984-01-01 0.489206155470826 1985-01-01 0.506325725664905 1986-01-01 0.546323430857301 1987-01-01 0.558586837662600 1988-01-01 0.584317565927749 1989-01-01 0.634449081178160 1990-01-01 0.682082634650528 1991-01-01 0.681081187475768 1992-01-01 0.685228113959528 1993-01-01 0.682019726861240 1994-01-01 0.680646992415614 1995-01-01 0.701001662449502 1996-01-01 0.716590472092152 1997-01-01 0.728527939198014 1998-01-01 0.725764141653204 1999-01-01 0.732410594972948 2000-01-01 0.748674717251425 2001-01-01 0.769591727189698 2002-01-01 0.767263078114945 2003-01-01 0.782790057046679 2004-01-01 0.805831050029364 2005-01-01 0.842786069073286 2006-01-01 0.881714685371315 2007-01-01 0.938244816341014 2008-01-01 0.983575843676686 2009-01-01 0.987800609772223 2010-01-01 1.000000000000000