Year Percent 1990 74.47 1991 74.47 1992 74.47 1993 74.47 1994 74.47 1995 74.47 1996 74.47 1997 74.47 1998 74.47 1999 74.47 2000 74.47 2001 74.47 2002 74.47 2003 74.47 2004 74.47 2005 74.47 2006 74.47 2007 74.47 2008 74.47 2009 74.47 2010 74.47 2011 74.47 2012 74.47 2013 74.47 2014 74.47 2015 74.47