Year Index 2010=1, Trend 1971-01-01 0.0982183342784378 1972-01-01 0.1084049492988240 1973-01-01 0.1210771588006650 1974-01-01 0.1429525780553740 1975-01-01 0.1687098048773620 1976-01-01 0.1944983627503320 1977-01-01 0.2107636019456470 1978-01-01 0.2182144377754230 1979-01-01 0.2277887596347970 1980-01-01 0.2510931535970850 1981-01-01 0.2710539515762420 1982-01-01 0.3341716779207860 1983-01-01 0.3927466141566270 1984-01-01 0.4171800794462630 1985-01-01 0.4423370934045300 1986-01-01 0.4581679948065680 1987-01-01 0.4710433918051240 1988-01-01 0.5298103932271260 1989-01-01 0.6002348960229100 1990-01-01 0.6777899142609540 1991-01-01 0.6484508209713330 1992-01-01 0.6631629811624960 1993-01-01 0.6644265600748960 1994-01-01 0.6756978638503660 1995-01-01 0.7271883209337500 1996-01-01 0.7500902839562220 1997-01-01 0.7587464002868880 1998-01-01 0.7953119298216160 1999-01-01 0.7950009336408020 2000-01-01 0.8082262644036620 2001-01-01 0.8213811108805550 2002-01-01 0.8300311582345260 2003-01-01 0.8556981915963560 2004-01-01 0.8770898016681560 2005-01-01 0.9429173287532780 2006-01-01 0.9899580907427630 2007-01-01 1.0780961091539300 2008-01-01 1.0796741248685400 2009-01-01 1.0008981953511300 2010-01-01 1.0000000000000000