Year Percent 1996-01-01 2.4965400000000000 1997-01-01 2.1575800000000000 1998-01-01 2.6917000000000000 1999-01-01 1.5948000000000000 2000-01-01 0.1188530000000000 2001-01-01 2.3774400000000000 2002-01-01 2.3774400000000000 2003-01-01 2.3774400000000000 2004-01-01 2.3774400000000000 2005-01-01 7.3045600000000000 2006-01-01 3.6852800000000000 2007-01-01 5.6862500000000000 2008-01-01 4.0210300000000005 2009-01-01 4.0140600000000000 2010-01-01 4.0188900000000000 2011-01-01 4.8295400000000000 2012-01-01 4.3811000000000000 2013-01-01 3.1234700000000000 2014-01-01 3.8211600000000000 2015-01-01 2.8581500000000000 2016-01-01 3.2683600000000000