Year	per 1,000 people
1960	20.951
1961	20.439
1962	19.883
1963	19.292
1964	18.862
1965	18.545
1966	18.096
1967	17.936
1968	17.71
1969	17.368
1970	22.577
1971	22.319
1972	21.743
1973	21.816
1974	21.628
1975	85.733
1976	86.575
1977	31.701
1978	22.627
1979	19.061
1980	16.53
1981	16.694
1982	16.469
1983	16.131
1984	15.731
1985	15.257
1986	14.902
1987	13.742
1988	13.168
1989	12.727
1990	12.246
1991	11.986
1992	11.75
1993	11.528
1994	11.38
1995	11.064
1996	10.847
1997	10.467
1998	10.151
1999	9.749
2000	9.273
2001	8.667
2002	8.149
2003	7.641
2004	7.273
2005	7.042
2006	6.809
2007	6.63
2008	6.418
2009	6.127
2010	6.121
2011	5.947
2012	5.863
2013	5.817
2014	5.756
2015	5.81
2016	5.779
2017	5.775
2018	5.874
2019	5.947
2020	6.228
2021	6.838
2022	6.785