Year Cases per 100,000 1990 32.67 1991 33.07 1992 33.5 1993 33.96 1994 34.43 1995 34.94 1996 36.48 1997 38.12 1998 39.84 1999 41.66 2000 43.57 2001 45.75 2002 48.06 2003 50.49 2004 53.06 2005 55.77 2006 57.58 2007 59.46 2008 61.4 2009 63.43 2010 65.54 2011 66.78 2012 68.06 2013 69.38 2014 70.73 2015 72.1 2016 73.53