Year Percent 1994-01-01 0.064892999999999990 1995-01-01 0.037456000000000000 1996-01-01 0.028380000000000002 1997-01-01 0.027971000000000000 1998-01-01 0.042664999999999995 1999-01-01 0.042056000000000000 2000-01-01 0.042838000000000000 2001-01-01 0.043512000000000000 2002-01-01 0.024135000000000000 2003-01-01 0.433558000000000000 2004-01-01 0.527057000000000000 2005-01-01 0.616315000000000000 2006-01-01 0.369944999999999970 2007-01-01 0.474112000000000000 2008-01-01 0.313370000000000000 2009-01-01 0.269050000000000000 2010-01-01 0.312766000000000000 2011-01-01 0.316373000000000000 2012-01-01 0.469495000000000000 2013-01-01 0.618460000000000000 2014-01-01 0.635653999999999900 2015-01-01 0.650972999999999900 2016-01-01 0.630560000000000000 2017-01-01 0.648863000000000000