Year Percent 1993-01-01 5.441400000000000 1994-01-01 11.811700000000000 1995-01-01 17.347000000000000 1996-01-01 20.269800000000000 1997-01-01 24.311999999999998 1998-01-01 26.888100000000000 1999-01-01 31.923600000000000 2000-01-01 42.813000000000000 2001-01-01 50.051600000000000 2002-01-01 51.117700000000000 2003-01-01 63.839000000000000 2004-01-01 63.057600000000000 2005-01-01 68.990000000000000 2006-01-01 79.556100000000000 2007-01-01 87.312400000000000 2008-01-01 70.223400000000000 2009-01-01 88.437800000000000 2010-01-01 89.590800000000000 2011-01-01 82.143999999999990 2012-01-01 93.734200000000000 2013-01-01 96.497900000000000 2014-01-01 83.311000000000000 2015-01-01 86.676800000000000 2016-01-01 90.164100000000000