Year	per 1,000 people
1960	25.715
1961	25.289
1962	24.93
1963	24.593
1964	24.178
1965	23.895
1966	23.59
1967	23.373
1968	23.068
1969	22.706
1970	22.336
1971	21.936
1972	21.551
1973	21.146
1974	21.052
1975	20.967
1976	20.598
1977	20.153
1978	19.812
1979	19.463
1980	19.024
1981	18.775
1982	18.762
1983	18.427
1984	18.084
1985	17.794
1986	17.161
1987	16.916
1988	16.435
1989	16.507
1990	15.215
1991	14.627
1992	13.545
1993	13.035
1994	12.528
1995	12.022
1996	11.635
1997	11.263
1998	14.821
1999	18.754
2000	11.084
2001	9.954
2002	9.727
2003	9.431
2004	9.242
2005	8.908
2006	8.439
2007	8.192
2008	7.989
2009	7.685
2010	7.492
2011	7.249
2012	7.08
2013	6.998
2014	6.806
2015	6.654
2016	6.58
2017	6.504
2018	6.353
2019	6.309
2020	6.424
2021	6.729
2022	6.727