Year	per 1,000 people
1960	41.331
1961	35.609
1962	39.8
1963	39.719
1964	38.366
1965	36.917
1966	35.297
1967	34.398
1968	34.978
1969	34.775
1970	34.787
1971	35.202
1972	35.755
1973	36.168
1974	34.95
1975	34.411
1976	33.99
1977	33.649
1978	33.634
1979	33.559
1980	33.454
1981	33.573
1982	33.417
1983	33.107
1984	32.607
1985	32.006
1986	31.378
1987	30.543
1988	29.811
1989	29.146
1990	28.508
1991	27.79
1992	26.773
1993	25.508
1994	23.913
1995	22.065
1996	20.457
1997	19.372
1998	18.525
1999	18.08
2000	18.046
2001	17.969
2002	18.142
2003	17.879
2004	17.862
2005	17.465
2006	16.995
2007	17.072
2008	17.143
2009	17.016
2010	16.906
2011	16.929
2012	17.078
2013	17.152
2014	16.981
2015	16.787
2016	16.438
2017	16.1
2018	15.873
2019	15.663
2020	15.4
2021	15.008
2022	14.689