Year % 1995 66.84 1996 66.52 1997 66.52 1998 66.52 1999 66.52 2000 66.52 2001 66.52 2002 65 2003 65 2004 64.92 2005 65 2006 65 2007 64.19 2008 64.19 2009 64.19 2010 64.19 2011 64.19 2013 65.02 2015 65.09 2016 65.09 2017 65.17 2018 65.17 2019 65.12 2020 65.12 2021 65.12