Year Index 2010=1 1988-01-01 0.786705692839304 1989-01-01 0.790711899811631 1990-01-01 0.842426905104197 1991-01-01 0.869067249195916 1992-01-01 0.885159185379534 1993-01-01 0.905086137299651 1994-01-01 0.833807089099060 1995-01-01 0.850970545807761 1996-01-01 0.915478075949893 1997-01-01 0.875793919649098 1998-01-01 0.904875035759475 1999-01-01 0.913214944484381 2000-01-01 0.898555537635926 2001-01-01 0.940269194341464 2002-01-01 0.973853595094171 2003-01-01 0.998786661727500 2004-01-01 0.979582467053635 2005-01-01 1.003901317774260 2006-01-01 0.990770037701152 2007-01-01 1.023334879929880 2008-01-01 1.020472518275630 2009-01-01 1.063977787633830 2010-01-01 1.000000000000000