Year Percent 1995 10.46 1996 10.46 1997 10.77 1998 11.88 1999 12.44 2000 12.9 2001 12.6 2002 12.82 2003 11.88 2004 11.95 2005 11.81 2006 12.03 2007 12.67 2008 12.29 2009 12.03 2010 11.95