Year	per 1,000 people
1960	41.786
1961	41.414
1962	40.729
1963	39.748
1964	38.315
1965	36.999
1966	35.597
1967	34.527
1968	33.656
1969	33.428
1970	33.411
1971	33.389
1972	33.489
1973	32.886
1974	32.273
1975	32.028
1976	31.966
1977	31.959
1978	31.765
1979	31.4
1980	29.6
1981	30.7
1982	31.1
1983	31.3
1984	32
1985	32
1986	32.7
1987	32.7
1988	31.5
1989	30.4
1990	29.1
1991	28.8
1992	28.2
1993	25.7
1994	24.3
1995	25.6
1996	23.2
1997	21.6
1998	21.7
1999	21.5
2000	19.8
2001	19.8
2002	20.2
2003	20.9
2004	21.5
2005	21.3
2006	23.1
2007	23.4
2008	23.9
2009	25.2
2010	26.8
2011	27.1
2012	27.6
2013	27.2
2014	27.7
2015	27.4
2016	26
2017	24.8
2018	27.1
2019	26.9
2020	24
2021	22.4
2022	21.5