Year Percent 1995-01-01 2.5719100000000000 1996-01-01 2.7397000000000000 1997-01-01 9.8842699999999990 1998-01-01 9.6979800000000010 1999-01-01 9.5051500000000000 2000-01-01 9.8485600000000000 2001-01-01 8.7526000000000000 2002-01-01 9.8995199999999990 2003-01-01 11.0839000000000000 2004-01-01 11.3737000000000000 2005-01-01 10.8612000000000000 2006-01-01 11.9801000000000000 2007-01-01 9.3368100000000000 2008-01-01 5.8904000000000000 2009-01-01 6.0955500000000000 2010-01-01 6.8623899999999995 2011-01-01 5.7229000000000000 2012-01-01 5.0609699999999990 2013-01-01 4.4595400000000005