Year	per 1,000 people
1960	8.6
1961	8.5
1962	8.7
1963	8.7
1964	9
1965	8.8
1966	8.9
1967	8.7
1968	9.1
1969	8.7
1970	9
1971	8.6
1972	8.3
1973	8.3
1974	8.4
1975	7.8
1976	8
1977	7.6
1978	7.5
1979	7.3
1980	7.3
1981	7.3
1982	7.5
1983	7.3
1984	7.1
1985	6.6
1986	7.3
1987	7.5
1988	7.2
1989	7.3
1990	7
1991	6.9
1992	7.1
1993	6.9
1994	7.1
1995	6.9
1996	7
1997	7
1998	6.8
1999	6.8
2000	6.7
2001	6.6
2002	6.8
2003	6.6
2004	6.5
2005	6.4
2006	6.4
2007	6.7
2008	6.7
2009	6.5
2010	6.5
2011	6.6
2012	6.6
2013	6.4
2014	6.6
2015	6.6
2016	6.6
2017	6.5
2018	6.3
2019	6.7
2020	6.3
2021	6.7
2022	7.3