Year	per 1,000 people
1960	10.47
1961	10.105
1962	9.787
1963	9.461
1964	9.304
1965	9.071
1966	8.885
1967	8.746
1968	8.652
1969	8.604
1970	8.701
1971	8.531
1972	8.546
1973	8.583
1974	8.555
1975	8.554
1976	8.576
1977	8.35
1978	8.358
1979	8.314
1980	8.279
1981	8.253
1982	8.151
1983	8.058
1984	7.992
1985	7.796
1986	7.675
1987	7.432
1988	7.202
1989	6.955
1990	6.781
1991	6.627
1992	6.305
1993	6.126
1994	5.982
1995	5.903
1996	5.779
1997	5.711
1998	5.686
1999	5.684
2000	5.729
2001	5.689
2002	5.621
2003	5.576
2004	5.556
2005	5.513
2006	5.548
2007	5.529
2008	5.559
2009	5.602
2010	5.636
2011	5.668
2012	5.681
2013	5.756
2014	5.704
2015	5.736
2016	5.695
2017	5.665
2018	5.631
2019	5.609
2020	5.566
2021	7.311
2022	5.568