Year	per 1,000 people
1960	39.52
1961	39.911
1962	39.963
1963	40.028
1964	40.072
1965	40.014
1966	39.972
1967	39.947
1968	39.778
1969	39.665
1970	39.376
1971	39.195
1972	38.744
1973	38.296
1974	37.58
1975	36.95
1976	36.175
1977	35.375
1978	34.776
1979	34.541
1980	34.29
1981	33.886
1982	34.366
1983	34.604
1984	35.231
1985	35.73
1986	36.482
1987	36.225
1988	34.899
1989	33.297
1990	31.146
1991	30.127
1992	28.723
1993	27.866
1994	27.065
1995	26.457
1996	25.214
1997	23.29
1998	22.41
1999	21.848
2000	20.705
2001	20.392
2002	20.04
2003	20.473
2004	21.261
2005	21.913
2006	22.455
2007	22.629
2008	24.08
2009	22.664
2010	22.274
2011	22.282
2012	22.353
2013	22.177
2014	22.057
2015	21.3
2016	20.25
2017	20.643
2018	21.137
2019	21.276
2020	20.326
2021	19.821
2022	19.31