Year Percent Change 1996-01-01 12.05494219776520 1997-01-01 8.41932855971497 1998-01-01 3.62402928384986 1999-01-01 5.65030062226981 2000-01-01 5.76051990748920 2001-01-01 6.52744211631845 2002-01-01 8.64843580481933 2003-01-01 4.03310246293643 2004-01-01 4.37268058196745 2005-01-01 1.82808711089178 2006-01-01 1.41245959154281 2007-01-01 2.95943488529286 2008-01-01 6.33941683793712 2009-01-01 5.70389901860412 2010-01-01 1.35483221790527