Year Index 2010=1, Trend 1970-01-01 0.0611493858651462 1971-01-01 0.0675890937020207 1972-01-01 0.0710489403736898 1973-01-01 0.0800777536420925 1974-01-01 0.0948355138349529 1975-01-01 0.1212179964735670 1976-01-01 0.1368436421058710 1977-01-01 0.1616316546868510 1978-01-01 0.1798387347052620 1979-01-01 0.2035916753427090 1980-01-01 0.2397536502273840 1981-01-01 0.2866882488693740 1982-01-01 0.3363297954078520 1983-01-01 0.3858258428572460 1984-01-01 0.4200984670954780 1985-01-01 0.4541296756683160 1986-01-01 0.4809187741785700 1987-01-01 0.5021744132413100 1988-01-01 0.5255649673841600 1989-01-01 0.5579701583930620 1990-01-01 0.6036423974924590 1991-01-01 0.6524832976628910 1992-01-01 0.6884756133763880 1993-01-01 0.6965323491165880 1994-01-01 0.6900029549286430 1995-01-01 0.6988332968780980 1996-01-01 0.7284069787961820 1997-01-01 0.7446390701323550 1998-01-01 0.7426263707816430 1999-01-01 0.7622441976278370 2000-01-01 0.7546035038422130 2001-01-01 0.7706215839372100 2002-01-01 0.7980418490229920 2003-01-01 0.8337952016253180 2004-01-01 0.8503250546879050 2005-01-01 0.8742139869351910 2006-01-01 0.8866619605070260 2007-01-01 0.9109203374261520 2008-01-01 0.9609306659104120 2009-01-01 1.0038326745331100 2010-01-01 1.0000000000000000