Year	per 1,000 people
1960	20.192
1961	20.006
1962	19.78
1963	19.577
1964	19.418
1965	19.143
1966	18.887
1967	18.582
1968	18.207
1969	17.815
1970	17.433
1971	17.494
1972	16.688
1973	16.267
1974	15.963
1975	15.701
1976	15.526
1977	15.144
1978	14.788
1979	14.446
1980	14.123
1981	13.877
1982	13.518
1983	13.225
1984	12.881
1985	12.632
1986	12.368
1987	12.178
1988	11.944
1989	11.855
1990	11.711
1991	11.816
1992	12.113
1993	11.483
1994	11.613
1995	11.141
1996	11.152
1997	11.208
1998	11.041
1999	10.899
2000	10.831
2001	10.676
2002	10.52
2003	10.328
2004	10.258
2005	9.988
2006	9.796
2007	9.643
2008	9.487
2009	9.361
2010	9.11
2011	9.07
2012	8.924
2013	8.807
2014	8.672
2015	8.598
2016	8.568
2017	8.37
2018	8.347
2019	8.421
2020	8.821
2021	9.147
2022	8.962