Year Index 2010=1, Trend 1970-01-01 0.706750631890341 1971-01-01 0.770932716621041 1972-01-01 0.810968515530961 1973-01-01 0.908970200392360 1974-01-01 1.156688159145900 1975-01-01 1.308879660894860 1976-01-01 1.327607612595780 1977-01-01 1.408941112389230 1978-01-01 1.450695487598480 1979-01-01 1.430719020964580 1980-01-01 1.498207776844740 1981-01-01 1.540837257219860 1982-01-01 1.565921751377140 1983-01-01 1.609360395571840 1984-01-01 1.615816794289870 1985-01-01 1.546428783090680 1986-01-01 1.605964584920900 1987-01-01 1.576830608366780 1988-01-01 1.530001849098980 1989-01-01 1.541266788139210 1990-01-01 1.477621762807170 1991-01-01 1.475446010092960 1992-01-01 1.497079825566370 1993-01-01 1.513977503215040 1994-01-01 1.540655982637420 1995-01-01 1.483732423259610 1996-01-01 1.416024463613210 1997-01-01 1.410198406658750 1998-01-01 1.436042895678430 1999-01-01 1.396987363921300 2000-01-01 1.315525444245500 2001-01-01 1.357125050913030 2002-01-01 1.322031013919500 2003-01-01 1.209321960365370 2004-01-01 1.141407782623660 2005-01-01 1.084553574076890 2006-01-01 1.056992082706050 2007-01-01 1.003896448346290 2008-01-01 1.006690614990820 2009-01-01 1.076722504320340 2010-01-01 1.000000000000000