Year Cases per 100,000 1958 45.13 1959 43.3 1960 43.31 1961 46.37 1962 47.89 1963 46.91 1964 48.11 1965 47.02 1966 52.41 1967 46.1 1968 49.33 1969 53.87 1970 51.39 1971 51.795 1972 53.62 1973 54.325 1974 56.23 1975 54.685 1976 58.37 1977 62.415 1978 61.24 1979 64.575 1980 61.47 1981 62.785 1982 62.34 1983 62.175 1984 63.57 1985 66.115 1986 66.08 1987 70.315 1988 73.12 1989 74.805 1990 81.85 1991 84.04 1992 86.39 1993 88.89 1994 91.56 1995 94.43 1996 96.26 1997 98.16 1998 100.13 1999 102.15 2000 104.25 2001 104.16 2002 104.09 2003 104.05 2004 104.04 2005 104.05 2006 101.94 2007 99.91 2008 97.98 2009 96.14 2010 94.39 2011 94.71 2012 95.06 2013 95.43 2014 95.82 2015 96.23 2016 96.7