Year Index 2010=1, Trend 1970-01-01 0.516074378733823 1971-01-01 0.568312764682054 1972-01-01 0.597994403239104 1973-01-01 0.683054476036796 1974-01-01 0.861075022941805 1975-01-01 0.961702561759759 1976-01-01 1.022939668211000 1977-01-01 1.099842235113220 1978-01-01 1.136229902209310 1979-01-01 1.145491316836790 1980-01-01 1.183145179386790 1981-01-01 1.237003606142580 1982-01-01 1.275305938795920 1983-01-01 1.305970857931470 1984-01-01 1.314431904055040 1985-01-01 1.275755574680870 1986-01-01 1.297996940795280 1987-01-01 1.277754662685520 1988-01-01 1.260014103052260 1989-01-01 1.274334780037610 1990-01-01 1.266190473153620 1991-01-01 1.290979292761360 1992-01-01 1.312636480283800 1993-01-01 1.328314165315700 1994-01-01 1.346201464483710 1995-01-01 1.324685878778010 1996-01-01 1.289018774671050 1997-01-01 1.281509588651840 1998-01-01 1.278028183292650 1999-01-01 1.237962085623150 2000-01-01 1.206695748081130 2001-01-01 1.181488534537060 2002-01-01 1.134018616771970 2003-01-01 1.081814083068060 2004-01-01 1.037195023164530 2005-01-01 1.003234635845820 2006-01-01 0.997094318074256 2007-01-01 0.977136593737884 2008-01-01 0.969443611656909 2009-01-01 0.984100180803486 2010-01-01 1.000000000000000