Year Index 2010=1 1978-01-01 0.306962136804075 1979-01-01 0.301134560149362 1980-01-01 0.319804149557352 1981-01-01 0.358679504427030 1982-01-01 0.397398247373617 1983-01-01 0.410161716344514 1984-01-01 0.416253812289532 1985-01-01 0.436730996530760 1986-01-01 0.476311767116864 1987-01-01 0.519931540588110 1988-01-01 0.548914767823144 1989-01-01 0.532692009180690 1990-01-01 0.534290519225498 1991-01-01 0.534317370348305 1992-01-01 0.528766437626984 1993-01-01 0.526006088807880 1994-01-01 0.518209230607123 1995-01-01 0.520312805741816 1996-01-01 0.521976264272570 1997-01-01 0.538083911110896 1998-01-01 0.583324938737401 1999-01-01 0.614100837931978 2000-01-01 0.626755313615052 2001-01-01 0.642694464776687 2002-01-01 0.663014005642856 2003-01-01 0.664633430495610 2004-01-01 0.673618757650243 2005-01-01 0.702805179772268 2006-01-01 0.764391271158394 2007-01-01 0.841521286168054 2008-01-01 0.922056742075338 2009-01-01 0.957739211869239 2010-01-01 1.000000000000000