Year Percent 1996-01-01 15.3679000000000000 1997-01-01 11.2143000000000000 1998-01-01 -13.2730000000000000 1999-01-01 5.4051700000000000 2000-01-01 11.7174000000000000 2001-01-01 9.6486700000000000 2002-01-01 12.8806000000000000 2003-01-01 14.5488000000000000 2004-01-01 22.5550000000000000 2005-01-01 12.5002000000000000 2006-01-01 5.1027700000000000 2007-01-01 7.6396399999999990 2008-01-01 5.3346800000000005 2009-01-01 9.4985600000000010 2010-01-01 12.9242000000000000 2011-01-01 29.0818000000000000 2012-01-01 16.9616000000000000 2013-01-01 14.2311000000000000 2014-01-01 12.6671000000000000 2015-01-01 9.0898600000000000 2016-01-01 10.5646000000000000