Year Index 2010=1, Trend 1970-01-01 0.240100501007219 1971-01-01 0.250823436072386 1972-01-01 0.259830327495007 1973-01-01 0.278140915606112 1974-01-01 0.314204462212321 1975-01-01 0.348219675695870 1976-01-01 0.369324867958932 1977-01-01 0.394260141511295 1978-01-01 0.420553437947565 1979-01-01 0.445122664024886 1980-01-01 0.488252123033153 1981-01-01 0.531219731994507 1982-01-01 0.579686332010493 1983-01-01 0.596275489712322 1984-01-01 0.615862822321790 1985-01-01 0.638106504612135 1986-01-01 0.649373033307980 1987-01-01 0.680685231822451 1988-01-01 0.710748360577053 1989-01-01 0.726551158095943 1990-01-01 0.757203576723261 1991-01-01 0.781785330054139 1992-01-01 0.799706066350726 1993-01-01 0.811453122979015 1994-01-01 0.820684196365201 1995-01-01 0.832486155225967 1996-01-01 0.844690598633768 1997-01-01 0.858485511016617 1998-01-01 0.884272831739202 1999-01-01 0.893072711708753 2000-01-01 0.909625012014390 2001-01-01 0.911626984844309 2002-01-01 0.901598851249948 2003-01-01 0.898842264499928 2004-01-01 0.918347965052345 2005-01-01 0.924221942254559 2006-01-01 0.944185501244469 2007-01-01 0.969142111602079 2008-01-01 0.984941694430996 2009-01-01 1.000470236410850 2010-01-01 1.000000000001030