Year % 1995 11.32 1996 11.27 1997 11.27 1998 11.27 1999 11.27 2000 11.27 2001 11.27 2002 11.27 2003 11.27 2005 10.54 2006 10.54 2008 10.54 2009 8.46 2010 8.46 2011 8.46 2013 8.46 2014 8.46 2015 8.17 2016 8.17 2020 8.14 2021 8.14