Year	Per 100,000 People
1964	12.0004
1968	12.5178
1969	14.0305
1970	12.1629
1971	12.5484
1972	11.8545
1973	12.5563
1974	10.9477
1975	15.2635
1976	15.6812
1977	20.5449
1992	20.9417
1993	21.0543
1994	22.4078
1995	22.1478
1996	22.1001