Year	per 1,000 people
1960	53.687
1961	53.455
1962	53.141
1963	52.796
1964	52.419
1965	51.962
1966	51.502
1967	51.032
1968	50.626
1969	50.229
1970	49.935
1971	49.81
1972	49.884
1973	50.137
1974	50.529
1975	51.577
1976	52.246
1977	52.796
1978	53.025
1979	53.239
1980	53.353
1981	53.234
1982	52.807
1983	51.933
1984	50.686
1985	49.338
1986	46.502
1987	43.779
1988	41.261
1989	38.801
1990	36.588
1991	34.59
1992	32.604
1993	30.861
1994	29.266
1995	28.157
1996	27.49
1997	26.836
1998	26.289
1999	25.777
2000	24.787
2001	24.033
2002	23.29
2003	22.726
2004	22.221
2005	21.383
2006	20.712
2007	20.539
2008	21.135
2009	22.278
2010	23.421
2011	22.627
2012	21.943
2013	21.561
2014	21.342
2015	21.316
2016	20.803
2017	20.282
2018	19.816
2019	19.298
2020	18.791
2021	18.419
2022	17.706