Year Index 2010=1, Trend 1985-01-01 0.541063288178418 1986-01-01 0.541080640447986 1987-01-01 0.545401722213748 1988-01-01 0.535620784894950 1989-01-01 0.553718531739384 1990-01-01 0.575038329723788 1991-01-01 0.582487632967384 1992-01-01 0.613365067752452 1993-01-01 0.644819470660099 1994-01-01 0.660082508111121 1995-01-01 0.667718377222843 1996-01-01 0.707237027905021 1997-01-01 0.713647818980242 1998-01-01 0.716574918019857 1999-01-01 0.723834315067877 2000-01-01 0.773137934298816 2001-01-01 0.823233595473746 2002-01-01 0.835175970577691 2003-01-01 0.835025192523665 2004-01-01 0.837142500746332 2005-01-01 0.850839866192722 2006-01-01 0.855967146150156 2007-01-01 0.873169246144793 2008-01-01 0.920872279510544 2009-01-01 0.982178290816321 2010-01-01 1.000000000000000