Year	per 1,000 people
1960	7.5
1961	7.8
1962	9.5
1963	8.1
1964	7.9
1965	8.1
1966	7.8
1967	7.8
1968	7.1
1969	8
1970	7.7
1971	8.6
1972	6.7
1973	7.8
1974	6.3
1975	7.5
1976	7.4
1977	6.1
1978	6.5
1979	6.8
1980	6.9
1981	6.3
1982	6.4
1983	5.7
1984	6.7
1985	6.4
1986	6.9
1987	6.5
1988	7
1989	6.1
1990	6.8
1991	6.4
1992	6.1
1993	5.9
1994	6.8
1995	7.3
1996	7.4
1997	7.4
1998	6.6
1999	6.4
2000	7.3
2001	6.6
2002	6.4
2003	6.4
2004	5.7
2005	6.2
2006	6.3
2007	6.4
2008	5.8
2009	6.4
2010	6.6
2011	6.8
2012	6.1
2013	6.7
2014	7.2
2015	6.7
2016	7.2
2017	6.6
2018	7.2
2019	6.8
2020	8.2
2021	6.9
2022	7.1