Year	per 1,000 people
1960	47.008
1961	46.489
1962	46.362
1963	46.206
1964	46.222
1965	46.348
1966	46.451
1967	46.574
1968	46.644
1969	46.98
1970	47.069
1971	46.661
1972	46.297
1973	45.882
1974	45.585
1975	45.395
1976	45.285
1977	45.236
1978	44.834
1979	44.341
1980	43.786
1981	43.017
1982	42.406
1983	41.902
1984	41.379
1985	40.968
1986	40.38
1987	39.575
1988	38.385
1989	37.059
1990	35.928
1991	34.702
1992	34.006
1993	33.871
1994	33.598
1995	33.076
1996	32.475
1997	31.796
1998	31.369
1999	30.992
2000	30.644
2001	30.99
2002	30.822
2003	30.689
2004	30.581
2005	30.5
2006	30.307
2007	30.782
2008	31.021
2009	29.736
2010	28.675
2011	27.52
2012	26.618
2013	25.2
2014	22.39
2015	20.233
2016	18.874
2017	18.568
2018	18.155
2019	18.883
2020	19.67
2021	20.111
2022	20.531