Year	Per 100,000 People
1967	1.3479
1968	1.3316
1969	1.3103
1970	1.2797
1971	2.53
1975	1.2411
1976	1.2411
1978	1.2227
1985	3.0174
1989	3.1777
1998	1.3588
1999	1.3186
2003	1.1837
2010	1.0663
2014	1.0563
2015	1.0567