Year	per 1,000 people
1960	19.411
1961	18.901
1962	18.298
1963	17.623
1964	16.942
1965	16.291
1966	15.66
1967	15.243
1968	14.783
1969	14.335
1970	13.729
1971	13.18
1972	12.765
1973	12.322
1974	12.013
1975	11.84
1976	11.659
1977	11.87
1978	11.308
1979	11.096
1980	11.084
1981	11.014
1982	10.952
1983	10.853
1984	10.74
1985	10.601
1986	10.411
1987	10.143
1988	9.843
1989	9.539
1990	9.229
1991	8.912
1992	8.633
1993	8.369
1994	8.142
1995	7.952
1996	7.801
1997	7.613
1998	7.433
1999	7.255
2000	7.09
2001	6.95
2002	6.875
2003	6.829
2004	6.857
2005	6.917
2006	7.004
2007	7.064
2008	7.102
2009	7.102
2010	7.071
2011	7.007
2012	6.928
2013	6.831
2014	6.727
2015	6.623
2016	6.519
2017	6.426
2018	6.345
2019	6.252
2020	6.242
2021	6.236
2022	6.182