Year % 1994 99.14788 1995 99.82048 1996 100 1998 99.46327 1999 99.71461 2000 100 2001 99.8406 2002 100 2005 100 2006 100 2007 99.22951 2008 98.76504 2009 99.38038 2010 99.75328 2011 99.58105 2015 99.07162 2016 98.39753