Year Per 100,000 People 1963 16.6574 1964 16.2895 1965 17.2975 1966 18.9352 1967 24.1817 1968 24.0602 1969 29.8486 1970 29.2571 1971 3.2164 1972 1.5008 1973 3.8887 1974 1.9422 1975 2.0846 1976 2.6809 1978 1.7597 1981 0.4155