Year % 1996 73.33 1999 73.43 2000 73.43 2001 73.43 2002 73.43 2003 73.43 2004 73.43 2006 73.37 2007 73.37 2010 73.37 2011 73.37 2012 73.39 2013 73.39 2020 73.47 2021 73.47