Year Percent 1995-01-01 0.061148000000000000 1996-01-01 0.033673000000000000 1997-01-01 0.032431000000000000 1998-01-01 0.030437000000000000 1999-01-01 0.028484000000000000 2000-01-01 0.168759000000000000 2001-01-01 0.163405000000000000 2002-01-01 0.009662000000000000 2003-01-01 0.019657000000000000 2004-01-01 0.010819000000000000 2005-01-01 0.011317000000000000 2006-01-01 0.021662999999999998 2007-01-01 0.025761000000000003 2008-01-01 0.033532000000000000 2009-01-01 0.056080999999999990 2010-01-01 0.063693000000000000 2011-01-01 0.069171000000000010 2012-01-01 0.068332000000000000 2013-01-01 0.068462000000000000 2014-01-01 0.064356000000000000 2015-01-01 0.087065000000000000 2016-01-01 0.099109000000000000