Year	per 1,000 people
1960	17.285
1961	17.019
1962	16.789
1963	16.558
1964	16.685
1965	16.234
1966	16.14
1967	16.042
1968	15.975
1969	15.775
1970	15.527
1971	15.171
1972	14.751
1973	14.302
1974	13.909
1975	13.656
1976	13.444
1977	13.371
1978	13.394
1979	13.436
1980	13.52
1981	13.533
1982	13.614
1983	13.828
1984	14.157
1985	14.602
1986	15.053
1987	15.438
1988	15.836
1989	16.239
1990	16.597
1991	17.001
1992	17.243
1993	17.315
1994	17.392
1995	17.434
1996	17.483
1997	17.511
1998	17.509
1999	17.4
2000	16.876
2001	16.145
2002	15.292
2003	14.32
2004	13.45
2005	12.659
2006	11.933
2007	11.351
2008	10.67
2009	9.961
2010	9.219
2011	8.763
2012	8.267
2013	7.788
2014	7.408
2015	7.196
2016	6.941
2017	6.809
2018	6.748
2019	6.571
2020	6.602
2021	6.973
2022	6.716