Year	per 1,000 people
1960	20.64
1961	20.315
1962	20.014
1963	19.671
1964	19.348
1965	18.945
1966	18.612
1967	18.302
1968	17.977
1969	17.674
1970	17.288
1971	16.963
1972	16.631
1973	16.347
1974	16.005
1975	15.698
1976	15.309
1977	14.984
1978	14.599
1979	14.309
1980	14.027
1981	13.754
1982	13.518
1983	13.151
1984	12.883
1985	12.549
1986	12.264
1987	12.021
1988	11.846
1989	11.593
1990	11.437
1991	11.266
1992	11.076
1993	10.875
1994	10.754
1995	10.62
1996	10.545
1997	10.421
1998	10.275
1999	10.167
2000	10.002
2001	9.847
2002	9.767
2003	9.538
2004	9.405
2005	9.299
2006	9.074
2007	8.924
2008	8.686
2009	8.559
2010	8.284
2011	8.184
2012	7.914
2013	7.786
2014	7.659
2015	7.418
2016	7.238
2017	7.054
2018	6.986
2019	6.856
2020	6.909
2021	7.258
2022	7.307