Year Per 100,000 People 1963 11.3998 1964 12.5635 1965 12.5613 1966 16.3253 1967 17.3177 1968 19.4029 1969 24.7075 1970 23.7581 1971 2.7351 1972 1.3955 1973 3.3851 1974 2.2091 1975 2.5285 1976 2.7085 1978 1.3155 1981 0.7618