Year Cases per 100,000 1990 11.69 1991 11.89 1992 12.1 1993 12.32 1994 12.54 1995 12.77 1996 12.98 1997 13.2 1998 13.43 1999 13.66 2000 13.9 2001 13.98 2002 14.07 2003 14.17 2004 14.26 2005 14.36 2006 14.14 2007 13.92 2008 13.71 2009 13.5 2010 13.31 2011 13.33 2012 13.37 2013 13.4 2014 13.43 2015 13.47 2016 13.5