Year	per 1,000 people
1960	10.716
1961	10.426
1962	10.061
1963	9.725
1964	9.382
1965	9.03
1966	8.678
1967	8.388
1968	8.029
1969	7.672
1970	7.367
1971	7.122
1972	6.951
1973	6.835
1974	6.691
1975	6.645
1976	6.6
1977	6.611
1978	6.575
1979	6.573
1980	6.585
1981	6.604
1982	6.729
1983	6.696
1984	6.746
1985	6.784
1986	6.828
1987	6.866
1988	6.848
1989	6.841
1990	6.842
1991	6.811
1992	6.811
1993	6.813
1994	6.819
1995	6.827
1996	6.837
1997	6.838
1998	6.819
1999	6.789
2000	6.759
2001	6.737
2002	6.698
2003	6.68
2004	6.648
2005	6.648
2006	6.627
2007	6.588
2008	6.581
2009	6.684
2010	6.605
2011	6.624
2012	6.636
2013	6.686
2014	6.744
2015	6.782
2016	6.817
2017	6.855
2018	6.888
2019	6.909
2020	6.946
2021	6.97
2022	6.885