Year Cases per 100,000 1990 11.76 1991 12.05 1992 12.35 1993 12.66 1994 12.98 1995 13.32 1996 13.51 1997 13.71 1998 13.91 1999 14.12 2000 14.35 2001 14.56 2002 14.79 2003 15.03 2004 15.27 2005 15.54 2006 15.53 2007 15.5 2008 15.49 2009 15.49 2010 15.5 2011 15.48 2012 15.48 2013 15.47 2014 15.46 2015 15.46 2016 15.47