Year Percent 1995 14.05 1996 14.05 1997 13.65 1998 15.03 1999 16.13 2000 16.99 2001 14.75 2002 15.53 2003 14.98 2004 13.85 2005 18.24 2006 15.19 2007 12.78 2008 10.5 2009 12.19 2010 12.19