Year	Per 100,000 People
1973	22.9445
1974	21.751
1977	25.2491
1980	23.0692
1981	23.422
1982	22.3639
1983	20.8899
1984	21.0977
1985	20.5511
1986	19.6567
1987	19.9952
1988	20.7071
1989	21.1042
1990	33.2898