Year Index 2005=1 1998-01-01 0.290283288174793 1999-01-01 0.320656294521507 2000-01-01 0.408018865313697 2001-01-01 0.497164196161897 2002-01-01 0.584515858454641 2003-01-01 0.647087403936365 2004-01-01 0.776853377659076 2005-01-01 1.000000000000000 2006-01-01 1.347414478699130 2007-01-01 1.617944237189790 2008-01-01 1.749281744256440 2009-01-01 1.743722054643640 2010-01-01 1.793321368053110