Year Index 2010=1, Trend 1985-01-01 0.592400345673244 1986-01-01 0.573594519687485 1987-01-01 0.585008338717316 1988-01-01 0.569596639391231 1989-01-01 0.584497543336120 1990-01-01 0.603572544612395 1991-01-01 0.620640500800775 1992-01-01 0.655583237367162 1993-01-01 0.673992980833490 1994-01-01 0.680596469567530 1995-01-01 0.685457161621303 1996-01-01 0.716825453788572 1997-01-01 0.724277863043104 1998-01-01 0.719904962153706 1999-01-01 0.718059863088005 2000-01-01 0.757141076006596 2001-01-01 0.803144000611263 2002-01-01 0.813262177540880 2003-01-01 0.817640228673213 2004-01-01 0.821764914512306 2005-01-01 0.837237884408274 2006-01-01 0.847733227575806 2007-01-01 0.856863704206259 2008-01-01 0.919227239019946 2009-01-01 0.990605137792793 2010-01-01 1.000000000000000