Year Percent 1994-01-01 0.69197700000000010 1995-01-01 0.68458700000000000 1996-01-01 0.48741100000000000 1997-01-01 0.48741100000000000 1998-01-01 0.10787999999999999 1999-01-01 0.11044200000000001 2000-01-01 0.14104200000000000 2001-01-01 0.26873600000000003 2002-01-01 0.42723800000000000 2003-01-01 0.18685800000000000 2004-01-01 0.23098400000000002 2005-01-01 0.29787700000000000 2006-01-01 0.34026000000000000 2007-01-01 0.37867600000000000 2008-01-01 0.35715000000000000 2009-01-01 0.29242900000000000 2010-01-01 0.30248600000000003 2011-01-01 0.28656000000000000 2012-01-01 0.29909500000000000 2013-01-01 0.33380900000000000 2014-01-01 0.35317000000000000 2015-01-01 0.39415400000000000 2016-01-01 0.38622000000000000