Year Percent 1995-01-01 3.7524800000000003 1996-01-01 3.7524800000000003 1997-01-01 3.4007600000000000 1998-01-01 26.1369000000000000 1999-01-01 22.8961000000000000 2000-01-01 22.8961000000000000 2001-01-01 1.0002300000000000 2002-01-01 1.2976400000000000 2003-01-01 24.1600000000000000 2004-01-01 22.0113000000000000 2005-01-01 16.8045000000000000 2006-01-01 17.2015000000000000 2007-01-01 54.0612000000000000 2008-01-01 69.5512000000000000 2009-01-01 50.3994000000000000 2010-01-01 37.7862000000000000 2011-01-01 23.2303000000000000 2012-01-01 35.4681000000000000 2013-01-01 39.9104000000000000 2014-01-01 10.1916000000000000 2015-01-01 24.5960000000000000 2016-01-01 0.2884040000000000