Year	per 1,000 people
1960	34.85
1961	34.715
1962	34.578
1963	34.447
1964	33.998
1965	32.881
1966	31.681
1967	30.207
1968	28.753
1969	27.275
1970	25.854
1971	25.084
1972	24.297
1973	23.706
1974	22.902
1975	22.349
1976	23.142
1977	23.997
1978	23.135
1979	24.564
1980	22.367
1981	21.349
1982	20.949
1983	21.392
1984	20.789
1985	21.859
1986	20.508
1987	20.555
1988	20.798
1989	20.97
1990	20.916
1991	18.504
1992	19.228
1993	18.597
1994	18.99
1995	19.847
1996	20.823
1997	20.118
1998	18.474
1999	17.829
2000	19.829
2001	18.091
2002	17.202
2003	16.521
2004	16.013
2005	15.668
2006	15.511
2007	15.637
2008	17.039
2009	16.632
2010	14.715
2011	14.313
2012	13.497
2013	12.469
2014	12.325
2015	12.591
2016	11.659
2017	11.789
2018	10.816
2019	11.485
2020	12.16
2021	12.115
2022	11.984