Year	per 1,000 people
1960	18.998
1961	18.668
1962	18.747
1963	18.733
1964	18.671
1965	18.628
1966	18.621
1967	18.613
1968	18.661
1969	18.649
1970	18.422
1971	18.263
1972	17.76
1973	17.311
1974	16.892
1975	16.421
1976	15.934
1977	15.583
1978	15.349
1979	15.168
1980	15.111
1981	14.808
1982	14.556
1983	14.396
1984	14.157
1985	13.798
1986	13.294
1987	12.799
1988	12.302
1989	11.818
1990	11.492
1991	11.209
1992	11.02
1993	10.865
1994	10.941
1995	10.676
1996	10.513
1997	10.322
1998	10.142
1999	9.962
2000	9.922
2001	9.974
2002	9.744
2003	9.513
2004	9.476
2005	9.247
2006	9.14
2007	9.026
2008	8.905
2009	8.706
2010	8.626
2011	8.417
2012	8.238
2013	8.092
2014	7.817
2015	7.773
2016	7.46
2017	7.39
2018	7.373
2019	7.143
2020	7.448
2021	7.627
2022	7.585