Year	per 1,000 people
1960	8.6
1961	9
1962	8.8
1963	9.2
1964	8.6
1965	9.4
1966	9.1
1967	9.6
1968	9.4
1969	9.9
1970	10.1
1971	10.2
1972	9.6
1973	9.7
1974	9.1
1975	9.5
1976	9.7
1977	9.4
1978	10.5
1979	9.5
1980	10.2
1981	9.6
1982	9.4
1983	9.5
1984	8.8
1985	8.4
1986	8.3
1987	8.4
1988	7.8
1989	7.4
1990	7.8
1991	7.9
1992	7.9
1993	7.3
1994	7.2
1995	7.2
1996	7.3
1997	7.5
1998	7.8
1999	7.9
2000	7.5
2001	7.4
2002	7.6
2003	7.9
2004	7.5
2005	7.8
2006	7.9
2007	7.6
2008	7.9
2009	7.8
2010	7.3
2011	7.8
2012	8.1
2013	7.6
2014	7.5
2015	7.7
2016	7.3
2017	7.6
2018	7.6
2019	7.3
2020	7.9
2021	8
2022	8