Year	per 1,000 people
1960	42.21
1961	41.719
1962	41.325
1963	40.856
1964	40.445
1965	40.107
1966	39.573
1967	39.144
1968	38.688
1969	38.231
1970	37.846
1971	37.456
1972	36.989
1973	36.508
1974	35.909
1975	35.479
1976	35.111
1977	34.714
1978	34.314
1979	34.006
1980	33.501
1981	33.061
1982	32.921
1983	32.803
1984	32.33
1985	31.261
1986	30.154
1987	29.089
1988	28.149
1989	27.886
1990	27.478
1991	27.038
1992	26.56
1993	26.108
1994	25.534
1995	24.984
1996	24.583
1997	24.075
1998	23.603
1999	23.198
2000	22.942
2001	22.978
2002	23.012
2003	22.421
2004	21.784
2005	21.25
2006	20.837
2007	20.592
2008	20.151
2009	19.813
2010	19.409
2011	19.104
2012	18.762
2013	18.573
2014	18.404
2015	18.402
2016	18.33
2017	18.129
2018	17.869
2019	17.663
2020	17.363
2021	17.103
2022	16.833