Year Cases per 100,000 1983 52.12 1984 58.78 1985 65.85 1986 71.54 1987 78.85 1988 84.73 1989 90.32 1990 101.03 1991 103.41 1992 105.96 1993 108.6 1994 111.36 1995 114.25 1996 115.53 1997 116.89 1998 118.32 1999 119.8 2000 121.42 2001 120.13 2002 118.94 2003 117.76 2004 116.61 2005 115.56 2006 112.42 2007 109.28 2008 106.35 2009 103.52 2010 100.92 2011 101.84 2012 102.91 2013 104 2014 105.11 2015 106.24 2016 107.46