Year	per 1,000 people
1960	31.921
1961	31.349
1962	30.845
1963	30.359
1964	29.867
1965	29.389
1966	28.872
1967	28.396
1968	27.895
1969	27.398
1970	26.875
1971	26.364
1972	25.845
1973	25.297
1974	24.773
1975	24.241
1976	23.718
1977	23.179
1978	23.875
1979	24.797
1980	24.209
1981	23.611
1982	25.622
1983	25.107
1984	30.03
1985	29.661
1986	23.705
1987	23.285
1988	19.945
1989	19.047
1990	18.449
1991	17.946
1992	17.222
1993	14.838
1994	14.689
1995	14.092
1996	13.627
1997	13.334
1998	13.565
1999	12.463
2000	12.096
2001	11.713
2002	11.28
2003	10.698
2004	10.277
2005	9.941
2006	9.679
2007	9.359
2008	8.832
2009	8.535
2010	8.254
2011	7.931
2012	7.711
2013	7.478
2014	7.395
2015	7.331
2016	7.077
2017	7.027
2018	6.981
2019	6.791
2020	7.113
2021	7.344
2022	6.906