Year Percent 1995-01-01 11.4511000000000000 1996-01-01 5.7071700000000000 1997-01-01 3.8655500000000000 1998-01-01 6.8715500000000000 1999-01-01 9.4532400000000000 2000-01-01 6.3381900000000000 2001-01-01 1.0539600000000000 2002-01-01 2.1112700000000000 2003-01-01 2.9070300000000000 2004-01-01 1.6919700000000000 2005-01-01 1.1243400000000000 2006-01-01 0.9345160000000000 2007-01-01 0.7624360000000000 2008-01-01 0.5526479999999999 2009-01-01 0.8627549999999999 2010-01-01 0.9307290000000001 2011-01-01 2.1702400000000000 2012-01-01 3.1042200000000000 2013-01-01 2.3248900000000003 2014-01-01 1.9681000000000000 2015-01-01 1.9937799999999999 2016-01-01 2.4888800000000000