Year	per 1,000 people
1960	38.04
1961	37.673
1962	37.231
1963	36.869
1964	36.599
1965	36.385
1966	36.888
1967	37.67
1968	38.609
1969	38.053
1970	37.465
1971	36.798
1972	36.172
1973	35.435
1974	34.591
1975	33.821
1976	34.104
1977	34.163
1978	33.907
1979	33.538
1980	32.936
1981	32.021
1982	30.888
1983	32.556
1984	34
1985	34.77
1986	34.981
1987	35.139
1988	35.012
1989	34.424
1990	33.522
1991	31.883
1992	30.382
1993	29.024
1994	27.948
1995	26.977
1996	26.3
1997	25.792
1998	25.358
1999	25.035
2000	24.587
2001	23.932
2002	23.284
2003	22.709
2004	22.094
2005	21.476
2006	20.9
2007	20.308
2008	19.77
2009	19.146
2010	18.63
2011	18.562
2012	20.904
2013	19.986
2014	19.087
2015	18.462
2016	17.927
2017	17.423
2018	17.022
2019	16.483
2020	15.768
2021	15.053
2022	14.414