Year % 1995 37.56 1996 37.55 1997 37.55 1998 37.55 1999 37.55 2001 37.55 2002 37.55 2003 36.22 2004 36.22 2005 36.22 2006 36.22 2007 34.83 2008 34.83 2009 34.83 2010 34.83 2011 34.83 2012 34.83 2013 34.83 2014 34.83 2015 34.63 2016 34.63 2017 34.63 2018 34.63 2019 34.63 2020 34.63 2021 34.63