Year % 1995 0.66 1996 0.64 1997 0.64 1998 0.64 1999 0.64 2000 0.64 2001 0.64 2002 88.45 2003 87.01 2004 84.7 2005 86.32 2006 86.24 2007 84.26 2008 80.02 2009 78.61 2010 78.13 2011 77.85 2012 79.77 2013 79.22 2014 78.53 2015 0.54 2016 0.54 2017 0.56 2018 0.56 2019 0.56 2020 0.56 2021 0.56