Year	per 1,000 people
1960	20.8
1961	21.3
1962	20.9
1963	20.9
1964	20.7
1965	19.9
1966	19.2
1967	18.9
1968	18.6
1969	19.2
1970	18.3
1971	17.2
1972	16.1
1973	14.5
1974	13.7
1975	13
1976	12.9
1977	12.5
1978	12.6
1979	12.5
1980	12.8
1981	12.5
1982	12
1983	11.8
1984	12.1
1985	12.3
1986	12.7
1987	12.7
1988	12.6
1989	12.7
1990	13.2
1991	13.2
1992	13
1993	12.8
1994	12.7
1995	12.3
1996	12.2
1997	12.3
1998	12.7
1999	12.7
2000	13
2001	12.6
2002	12.5
2003	12.3
2004	11.9
2005	11.5
2006	11.3
2007	11.1
2008	11.2
2009	11.2
2010	11.1
2011	10.8
2012	10.5
2013	10.2
2014	10.4
2015	10.1
2016	10.1
2017	9.9
2018	9.8
2019	9.8
2020	9.7
2021	10.2
2022	9.5