Year Percent 1995-01-01 7.1059199999999990 1996-01-01 2.3048800000000000 1997-01-01 2.5310900000000003 1998-01-01 1.7731900000000000 1999-01-01 7.5864199999999995 2000-01-01 5.4928600000000000 2001-01-01 3.0972200000000000 2002-01-01 4.4368800000000000 2003-01-01 6.3970199999999995 2004-01-01 9.1741600000000000 2005-01-01 4.3593600000000000 2006-01-01 4.4345400000000000 2007-01-01 6.9020300000000000 2008-01-01 7.0688900000000000 2009-01-01 4.7828900000000000 2010-01-01 1.8213700000000002 2011-01-01 1.7194300000000000 2012-01-01 1.2806799999999998