Year	per 1,000 people
1960	9.5
1961	9.4
1962	9.8
1963	9.8
1964	9.9
1965	10.1
1966	10.3
1967	9.9
1968	9.7
1969	9.8
1970	9.8
1971	9.8
1972	10.1
1973	10.1
1974	10.2
1975	10.1
1976	10.6
1977	9.9
1978	10.4
1979	10.7
1980	10.9
1981	11
1982	10.8
1983	11.2
1984	11.2
1985	11.4
1986	11.3
1987	11.3
1988	11.5
1989	11.6
1990	11.9
1991	11.6
1992	11.8
1993	12.1
1994	11.7
1995	12.1
1996	11.6
1997	11.3
1998	11
1999	11.1
2000	10.9
2001	10.9
2002	10.9
2003	10.7
2004	10.3
2005	10.1
2006	10.2
2007	10.2
2008	9.9
2009	9.9
2010	9.8
2011	9.4
2012	9.4
2013	9.3
2014	9.1
2015	9.2
2016	9.2
2017	9.2
2018	9.5
2019	9.3
2020	9.4
2021	9.8
2022	10.1