Year Percent 1995 6.3 1996 8.02 1997 9.47 1998 11.88 2004 8.87 2005 7.52 2006 7.0047 2007 6.68 2008 6.62 2009 10.29 2010 9.3 2011 8.79 2012 8.52 2013 8.04 2014 10.85 2015 10.1 2016 10.83 2017 11.09