Year Cases per 100,000 1990 7.53 1991 7.68 1992 7.71 1993 7.77 1994 7.85 1995 7.96 1996 7.97 1997 7.99 1998 7.97 1999 7.91 2000 7.86 2001 7.89 2002 7.91 2003 8 2004 8.14 2005 8.18 2006 8.26 2007 8.29 2008 8.32 2009 8.35 2010 8.41 2011 8.52 2012 8.52 2013 8.53 2014 8.55 2015 8.57 2016 8.6