Year Percent 1993-01-01 1.04417 1994-01-01 7.08000 1995-01-01 15.43000 1996-01-01 10.01000 1997-01-01 6.39000 1998-01-01 19.07000 1999-01-01 9.35000 2000-01-01 9.14000 2001-01-01 3.98000 2002-01-01 4.80000 2003-01-01 4.36000 2004-01-01 6.04000 2005-01-01 5.18000 2006-01-01 4.11000 2007-01-01 4.80000 2008-01-01 7.65000 2009-01-01 4.03000 2010-01-01 4.19000 2011-01-01 3.77000 2012-01-01 3.31000 2013-01-01 2.62000 2014-01-01 2.81000 2015-01-01 2.92000 2016-01-01 4.75000