Year Per 100,000 People 1950 8.0881 1951 9.8199 1952 8.442 1953 9.1184 1954 8.8772 1955 8.6117 1956 10.6432 1957 10.688 1958 11.1791 1959 11.4161 1960 12.8449 1961 12.8459 1962 14.4779 1963 17.2026 1964 20.5063 1965 17.992 1966 16.9266 1967 19.6976 1968 19.4707 1977 20.8187 1980 31.5445 1981 29.2835 1982 33.1684 1983 37.251 1984 39.4833 1985 38.8778 1986 38.2437