Year Index 2010=1, Trend 1966-01-01 0.170613026578169 1967-01-01 0.176779908371209 1968-01-01 0.180936781832656 1969-01-01 0.192670771795302 1970-01-01 0.207538029949696 1971-01-01 0.225400835456664 1972-01-01 0.230969945704227 1973-01-01 0.257368384132696 1974-01-01 0.306285221976124 1975-01-01 0.340591322778900 1976-01-01 0.362675959327361 1977-01-01 0.390836762035293 1978-01-01 0.420557714238863 1979-01-01 0.450565152096175 1980-01-01 0.482528721419732 1981-01-01 0.521154710739806 1982-01-01 0.560546155247031 1983-01-01 0.570453662738734 1984-01-01 0.609856019448380 1985-01-01 0.646300058737707 1986-01-01 0.688495214125290 1987-01-01 0.759729787255272 1988-01-01 0.784769520553728 1989-01-01 0.791589023357284 1990-01-01 0.810567333346857 1991-01-01 0.861037029121824 1992-01-01 0.886009811275348 1993-01-01 0.895564194223902 1994-01-01 0.841815631710694 1995-01-01 0.851673600793804 1996-01-01 0.900165665012852 1997-01-01 0.881221382188914 1998-01-01 0.903876011596930 1999-01-01 0.909734222414330 2000-01-01 0.904914096402892 2001-01-01 0.937387176273866 2002-01-01 0.971377998633718 2003-01-01 0.991076859282844 2004-01-01 0.980872062092039 2005-01-01 0.995921289969460 2006-01-01 0.993131940578941 2007-01-01 1.019236981520050 2008-01-01 1.025249698906350 2009-01-01 1.054578783375220 2010-01-01 1.000000000000000