Year Percent 1985-01-01 0.00323200000000000 1986-01-01 0.11519900000000000 1987-01-01 0.11640100000000000 1988-01-01 0.02332500000000000 1989-01-01 0.05531799999999999 1990-01-01 0.05531799999999999 1991-01-01 0.05531799999999999 1992-01-01 0.01084100000000000 1993-01-01 0.02196300000000000 1994-01-01 0.06136900000000001 1995-01-01 0.06136900000000001 1996-01-01 0.06136900000000001 1997-01-01 0.06136900000000001 1998-01-01 0.06136900000000001 1999-01-01 0.06136900000000001 2000-01-01 0.06136900000000001 2001-01-01 0.06136900000000001 2002-01-01 0.06136900000000001 2003-01-01 0.06136900000000001 2004-01-01 0.06136900000000001 2005-01-01 0.06136900000000001 2006-01-01 0.06136900000000001 2007-01-01 0.06136900000000001 2008-01-01 0.06136900000000001 2009-01-01 0.06136900000000001 2010-01-01 0.06136900000000001 2011-01-01 0.06136900000000001 2012-01-01 0.06136900000000001 2013-01-01 0.06136900000000001 2014-01-01 0.06136900000000001 2015-01-01 0.06136900000000001 2016-01-01 0.06136900000000001 2017-01-01 0.00000000000000000