Year	per 1,000 people
1960	46.883
1961	46.594
1962	46.216
1963	45.791
1964	45.395
1965	44.928
1966	44.439
1967	44.001
1968	43.407
1969	42.901
1970	42.439
1971	41.917
1972	41.342
1973	40.733
1974	40.114
1975	39.466
1976	38.895
1977	38.336
1978	37.723
1979	37.159
1980	36.546
1981	35.946
1982	35.42
1983	34.953
1984	34.455
1985	33.993
1986	33.482
1987	32.892
1988	32.332
1989	31.622
1990	30.9
1991	30.152
1992	29.287
1993	28.49
1994	27.692
1995	26.908
1996	26.164
1997	25.455
1998	24.789
1999	24.202
2000	23.719
2001	22.908
2002	22.481
2003	22.209
2004	22.278
2005	22.334
2006	22.274
2007	22.026
2008	21.655
2009	21.417
2010	21.066
2011	20.75
2012	20.225
2013	19.71
2014	19.248
2015	18.808
2016	18.5
2017	18.269
2018	18.092
2019	18.042
2020	17.833
2021	17.622
2022	17.376