Year Cases per 100,000 1990 55.54 1991 57.57 1992 59.7 1993 61.92 1994 64.24 1995 66.67 1996 67.45 1997 68.26 1998 69.08 1999 69.92 2000 70.79 2001 70.65 2002 70.53 2003 70.42 2004 70.32 2005 70.23 2006 70.07 2007 69.91 2008 69.76 2009 69.62 2010 69.49 2011 68.72 2012 67.97 2013 67.23 2014 66.5 2015 65.79 2016 65.1