Year Cases per 100,000 1990 8.43 1991 8.74 1992 9.07 1993 9.41 1994 9.77 1995 10.15 1996 10.59 1997 11.05 1998 11.53 1999 12.03 2000 12.56 2001 12.74 2002 12.93 2003 13.12 2004 13.31 2005 13.5 2006 13.63 2007 13.75 2008 13.88 2009 14.02 2010 14.16 2011 14.39 2012 14.62 2013 14.87 2014 15.12 2015 15.37 2016 15.64