Year Cases per 100,000 1990 14.04 1991 14.37 1992 14.71 1993 15.15 1994 15.56 1995 15.9 1996 16.49 1997 16.99 1998 17.35 1999 17.82 2000 18.35 2001 18.63 2002 19.22 2003 19.78 2004 20.43 2005 20.93 2006 21.47 2007 22.19 2008 22.81 2009 23.37 2010 23.78 2011 24.55 2012 25.19 2013 25.54 2014 26.04 2015 25.95 2016 26.09