Year % 1996 85.68 1997 86.58 1998 86.58 1999 86.58 2000 86.58 2001 86.58 2002 87.89 2003 87.89 2007 88.81 2010 88.81 2011 90.21 2012 90.21 2015 88.42 2016 88.42 2021 89.63