Year Index 2010=1, Trend 1985-01-01 0.949871122874156 1986-01-01 0.891350879734009 1987-01-01 0.870083690458638 1988-01-01 0.841680759022907 1989-01-01 0.830298551607283 1990-01-01 0.828975408132339 1991-01-01 0.820046281736148 1992-01-01 0.853588164753324 1993-01-01 0.892294824428154 1994-01-01 0.849239079641551 1995-01-01 0.847332568779364 1996-01-01 0.860224040976894 1997-01-01 0.847711426505692 1998-01-01 0.817319787863144 1999-01-01 0.799169039262533 2000-01-01 0.815095734937668 2001-01-01 0.830961849798839 2002-01-01 0.827113174640178 2003-01-01 0.881061009016256 2004-01-01 0.903786708372300 2005-01-01 0.914049522025701 2006-01-01 0.904324583331584 2007-01-01 0.906467029333656 2008-01-01 0.903059959728538 2009-01-01 0.985879507105728 2010-01-01 1.000000000000000