Year Cases per 100,000 1990 95.03 1991 94.17 1992 94.59 1993 94.82 1994 94.48 1995 93.5 1996 93.17 1997 92.42 1998 90.28 1999 88.42 2000 86.33 2001 84.29 2002 82.57 2003 79.95 2004 77.54 2005 75.8 2006 74.37 2007 73.14 2008 71.86 2009 70.33 2010 69.48 2011 68.33 2012 67.4 2013 66.29 2014 67.29 2015 68.43 2016 69.82