Year Index 2010=1 1970-01-01 0.156906029240491 1971-01-01 0.182160652536956 1972-01-01 0.199710091112889 1973-01-01 0.238447366087327 1974-01-01 0.277480506998081 1975-01-01 0.292874202186280 1976-01-01 0.294020179806269 1977-01-01 0.311008667313697 1978-01-01 0.322446038064406 1979-01-01 0.340559144255047 1980-01-01 0.362454781377343 1981-01-01 0.410199336411797 1982-01-01 0.398222799601538 1983-01-01 0.398082853360057 1984-01-01 0.422598421404096 1985-01-01 0.438552270318424 1986-01-01 0.456503221032787 1987-01-01 0.507608578689167 1988-01-01 0.561096004146291 1989-01-01 0.593560578051646 1990-01-01 0.616424323476739 1991-01-01 0.631473023474184 1992-01-01 0.662710652716394 1993-01-01 0.670442706081890 1994-01-01 0.663204407388308 1995-01-01 0.688223748901006 1996-01-01 0.683573539192359 1997-01-01 0.729842919573715 1998-01-01 0.735523637366814 1999-01-01 0.729798562704214 2000-01-01 0.747711953081349 2001-01-01 0.731146679038180 2002-01-01 0.732613620471752 2003-01-01 0.734431744633326 2004-01-01 0.750788540983627 2005-01-01 0.784488558398120 2006-01-01 0.863664885824138 2007-01-01 0.935615858003471 2008-01-01 0.981455146841066 2009-01-01 1.007813063736820 2010-01-01 1.000000000000000