Year Percent 1995-01-01 4.4295700000000000 1996-01-01 3.7531199999999996 1997-01-01 3.2689500000000000 1998-01-01 12.2217000000000000 1999-01-01 7.6772000000000000 2000-01-01 8.9627200000000000 2001-01-01 8.1061100000000010 2002-01-01 9.9007899999999990 2003-01-01 9.1414800000000000 2004-01-01 7.5887600000000010 2005-01-01 7.2807900000000000 2006-01-01 5.2660000000000000 2007-01-01 7.6085899999999995 2008-01-01 7.9660699999999990 2009-01-01 10.4015000000000000 2010-01-01 8.9191600000000000 2011-01-01 14.5100000000000000 2012-01-01 16.9316000000000000 2013-01-01 17.4481000000000000 2014-01-01 5.5767700000000000 2015-01-01 6.1160200000000000 2016-01-01 5.6818200000000000