Year	per 1,000 people
1960	30.571
1961	30.225
1962	29.853
1963	29.542
1964	29.165
1965	28.337
1966	27.641
1967	26.857
1968	26.317
1969	25.776
1970	25.261
1971	24.635
1972	23.964
1973	23.22
1974	24.954
1975	39.775
1976	37.854
1977	39.866
1978	43.774
1979	42.273
1980	33.565
1981	32.474
1982	31.347
1983	30.635
1984	28.423
1985	28.543
1986	28.068
1987	26.729
1988	26.634
1989	19.077
1990	18.691
1991	18.434
1992	17.472
1993	16.774
1994	16.121
1995	16.323
1996	15.81
1997	15.372
1998	15.703
1999	17.983
2000	10.187
2001	9.884
2002	9.604
2003	9.342
2004	9.065
2005	8.796
2006	8.504
2007	8.274
2008	8.096
2009	7.987
2010	7.951
2011	7.895
2012	7.747
2013	7.644
2014	7.579
2015	7.549
2016	7.343
2017	7.163
2018	7.012
2019	6.888
2020	6.831
2021	7.233
2022	6.535