Year Cases per 100,000 1990 46.14 1991 46.72 1992 47.36 1993 48.03 1994 48.74 1995 49.55 1996 50.02 1997 50.53 1998 51.07 1999 51.64 2000 52.3 2001 54.12 2002 56.1 2003 58.23 2004 60.53 2005 63.05 2006 64.77 2007 66.57 2008 68.47 2009 70.47 2010 72.6 2011 73.45 2012 74.34 2013 75.24 2014 76.16 2015 77.1 2016 78.07