Year	per 1,000 people
1960	11.5
1961	12.3
1962	11.9
1963	11.8
1964	11.4
1965	11.5
1966	12.2
1967	10.8
1968	11.4
1969	11.5
1970	11.4
1971	10.7
1972	11.3
1973	11.1
1974	11.1
1975	10.4
1976	10.5
1977	10.2
1978	10.2
1979	10
1980	9.8
1981	9.5
1982	9.3
1983	9.4
1984	9.1
1985	9.4
1986	9.5
1987	8.9
1988	9
1989	9.1
1990	8.9
1991	8.9
1992	8.7
1993	9
1994	8.6
1995	8.9
1996	8.7
1997	8.6
1998	8.5
1999	8.7
2000	8.2
2001	7.8
2002	7.5
2003	7.3
2004	7
2005	6.8
2006	6.7
2007	6.4
2008	6.3
2009	6.3
2010	6.1
2011	6.2
2012	6.3
2013	6.4
2014	6.3
2015	6.4
2016	6.4
2017	6.3
2018	6.4
2019	6.3
2020	6.5
2021	6.8
2022	6.9