Year Cases per 100,000 1990 13.68 1991 13.99 1992 14.3 1993 14.62 1994 14.95 1995 15.28 1996 15.47 1997 15.65 1998 15.85 1999 16.04 2000 16.24 2001 16.38 2002 16.53 2003 16.68 2004 16.83 2005 16.98 2006 17.24 2007 17.49 2008 17.76 2009 18.03 2010 18.3 2011 18.43 2012 18.56 2013 18.69 2014 18.83 2015 18.96 2016 19.1