Year Percent Change 1996-01-01 20.2274479315526000 1997-01-01 19.5904260394125000 1998-01-01 13.3575180896856000 1999-01-01 7.3646924957721100 2000-01-01 6.0082075576252000 2001-01-01 3.1920807654244400 2002-01-01 -0.0530166346731982 2003-01-01 -2.7832660938019400 2004-01-01 -5.1392036326366800 2005-01-01 -0.6647750400282860 2006-01-01 1.6936682276937200 2007-01-01 4.2895450545555100 2008-01-01 8.2440140301697300 2009-01-01 1.4541704575079200 2010-01-01 -0.7320520525993290