Year Index 2010=1, Trend 1970-01-01 0.222760842587184 1971-01-01 0.239930245469782 1972-01-01 0.249060441864644 1973-01-01 0.253734142498252 1974-01-01 0.275209571512866 1975-01-01 0.339586534379700 1976-01-01 0.384550088014628 1977-01-01 0.431394963944963 1978-01-01 0.474795597142054 1979-01-01 0.489111529268949 1980-01-01 0.528927542876886 1981-01-01 0.574114495103990 1982-01-01 0.595425732815155 1983-01-01 0.640337533504145 1984-01-01 0.692084555192984 1985-01-01 0.756065716746558 1986-01-01 0.788435415050168 1987-01-01 0.816009820575378 1988-01-01 0.848049902231088 1989-01-01 0.927136935582934 1990-01-01 0.974446549309604 1991-01-01 1.021801826229040 1992-01-01 1.014175670705820 1993-01-01 1.013743092397890 1994-01-01 1.013202265170440 1995-01-01 1.011271892826690 1996-01-01 1.008352589451780 1997-01-01 1.005771577404360 1998-01-01 1.000993442714270 1999-01-01 0.999577649055336 2000-01-01 1.004216805343360 2001-01-01 1.004283463785500 2002-01-01 1.004070506155370 2003-01-01 0.998281694637166 2004-01-01 0.985243252891263 2005-01-01 0.975234503116949 2006-01-01 0.970790710441800 2007-01-01 0.981470685225916 2008-01-01 0.986626947772530 2009-01-01 0.996805827359064 2010-01-01 1.000000000000000