Year	per 1,000 people
1960	7.594
1961	7.59
1962	7.833
1963	7.643
1964	7.395
1965	7.72
1966	7.803
1967	8.076
1968	8.261
1969	8.725
1970	8.808
1971	8.916
1972	9.137
1973	9.281
1974	9.373
1975	9.841
1976	10.098
1977	10.217
1978	10.435
1979	10.8
1980	11
1981	10.9
1982	10.7
1983	11.1
1984	11.6
1985	11.3
1986	10.4
1987	10.5
1988	10.7
1989	10.7
1990	11.2
1991	11.4
1992	12.2
1993	14.5
1994	15.7
1995	15
1996	14.2
1997	13.8
1998	13.5
1999	14.6
2000	15.3
2001	15.6
2002	16.2
2003	16.4
2004	15.9
2005	16.1
2006	15.1
2007	14.6
2008	14.5
2009	14.1
2010	14.2
2011	13.5
2012	13.3
2013	13
2014	13.1
2015	13
2016	12.9
2017	12.4
2018	12.5
2019	12.3
2020	14.6
2021	16.7
2022	12.9