Year Percent 1991 8.69565 1992 8.69565 1993 8.69565 1994 8.69565 1995 8.69565 1996 8.69565 1997 8.69565 1998 6.52174 1999 6.52174 2000 6.52174 2001 6.52174 2002 6.52174 2003 6.52174 2004 6.52174 2005 6.52174 2006 6.52174 2007 3.69565 2008 3.69565 2009 3.69565 2010 3.69565 2011 3.69565 2012 3.69565 2013 3.69565 2014 3.69565 2015 3.69565 2016 3.69565 2017 3.69565 2018 1.17391 2019 1.17391 2020 1.17391 2021 1.17391