Year Percent 1996-01-01 7.673939999999999 1997-01-01 11.520200000000000 1998-01-01 7.866810000000001 1999-01-01 4.494890000000000 2000-01-01 3.184150000000000 2001-01-01 -5.758500000000000 2002-01-01 1.842570000000000 2003-01-01 8.058350000000000 2004-01-01 9.500190000000000 2005-01-01 8.684350000000000 2006-01-01 13.221900000000000 2007-01-01 16.527000000000000 2008-01-01 11.577100000000000 2009-01-01 6.364890000000000 2010-01-01 8.245619999999999 2011-01-01 3.309970000000000 2012-01-01 4.592200000000000 2013-01-01 6.645400000000000 2014-01-01 6.945560000000000 2015-01-01 9.250710000000000 2016-01-01 12.289800000000000