Year Percent 1993-01-01 0.402859000000000000 1994-01-01 0.465603000000000000 1995-01-01 0.049211000000000005 1996-01-01 0.183573000000000010 1997-01-01 0.251757000000000000 1998-01-01 0.137077000000000000 1999-01-01 0.077754999999999990 2000-01-01 0.074104000000000000 2001-01-01 0.069166999999999990 2002-01-01 0.064617000000000000 2003-01-01 0.057257000000000000 2004-01-01 0.042914000000000000 2005-01-01 0.028204000000000003 2006-01-01 0.020569999999999998 2007-01-01 0.016749000000000000 2008-01-01 0.017973000000000000 2009-01-01 0.024595000000000000 2010-01-01 0.030580000000000000 2011-01-01 0.030162000000000000 2012-01-01 0.030888000000000000 2013-01-01 0.032080000000000004 2014-01-01 0.030558999999999996 2015-01-01 0.146764000000000000 2016-01-01 0.287401000000000000