Year	Per 100,000 People
1968	4.2337
1969	4.683
1978	2.6637
1979	2.9782
1980	1.8749
1981	2.6534
1982	2.8316
1983	2.4502
1984	2.0726
1985	2.1747
1986	2.2411
1987	2.1747
1988	1.8233
1989	1.7573
1990	2.1884