Year	Per 100,000 People
1973	20.1703
1974	20.9133
1977	21.4833
1980	20.6542
1981	20.4236
1982	19.7705
1983	18.7543
1984	19.4988
1985	17.8329
1986	19.5699
1987	17.391
1988	18.5647
1989	20.251
1990	25.5177