Year Percent 1990 7.62 1991 7.62 1992 7.62 1993 7.62 1994 7.62 1995 7.62 1996 7.62 1997 7.62 1998 7.62 1999 7.62 2000 7.62 2001 7.62 2002 7.62 2003 7.62 2004 7.62 2005 7.62 2006 7.62 2007 7.62 2008 7.62 2009 7.62 2010 7.62 2011 7.62 2012 7.62 2013 7.62 2014 7.62 2015 7.62