Year Index 2010=1 1978-01-01 0.306132397218524 1979-01-01 0.301642210029519 1980-01-01 0.319774115442377 1981-01-01 0.359245124282292 1982-01-01 0.398055908152138 1983-01-01 0.409291925436229 1984-01-01 0.414529660356768 1985-01-01 0.437029644939549 1986-01-01 0.476458154026659 1987-01-01 0.520240573104870 1988-01-01 0.547600394330229 1989-01-01 0.531929822819189 1990-01-01 0.534801566880373 1991-01-01 0.534550793256508 1992-01-01 0.527871673610160 1993-01-01 0.525966288005223 1994-01-01 0.517117563295906 1995-01-01 0.519178397371681 1996-01-01 0.521388923739765 1997-01-01 0.538335499647561 1998-01-01 0.583641391987608 1999-01-01 0.614414348858607 2000-01-01 0.623818176121454 2001-01-01 0.642810959125440 2002-01-01 0.663172520424096 2003-01-01 0.664654551154060 2004-01-01 0.672643126884732 2005-01-01 0.701085885087778 2006-01-01 0.763005043048966 2007-01-01 0.841676157340879 2008-01-01 0.921825172347128 2009-01-01 0.958049144310469 2010-01-01 1.000000000000000