Year Index 2010=1, Trend 1970-01-01 0.438181179288556 1971-01-01 0.476904245585388 1972-01-01 0.518730567859810 1973-01-01 0.564047705525906 1974-01-01 0.617003012459980 1975-01-01 0.662172976555725 1976-01-01 0.676076021585892 1977-01-01 0.688565857438087 1978-01-01 0.702181039252612 1979-01-01 0.721242115305170 1980-01-01 0.770348349019925 1981-01-01 0.811563861428620 1982-01-01 0.857278947678583 1983-01-01 0.867390945922500 1984-01-01 0.872918434079557 1985-01-01 0.883962028578027 1986-01-01 0.903793382739544 1987-01-01 0.919015163762758 1988-01-01 0.918161189901404 1989-01-01 0.925111869924021 1990-01-01 0.932028838311077 1991-01-01 0.970988348453890 1992-01-01 1.029555666711720 1993-01-01 1.075759102997680 1994-01-01 1.084057281555380 1995-01-01 1.099566749254060 1996-01-01 1.105701738562020 1997-01-01 1.084420890560950 1998-01-01 1.061543359443540 1999-01-01 1.054012504616850 2000-01-01 1.033453111940730 2001-01-01 1.025807441599820 2002-01-01 1.029966696860200 2003-01-01 1.029130466543590 2004-01-01 1.003039767793390 2005-01-01 0.987343197972920 2006-01-01 0.965464629209816 2007-01-01 0.958017242706530 2008-01-01 0.991008085438844 2009-01-01 1.021095828864940 2010-01-01 1.000000000000000