Year	per 1,000 people
1960	24.575
1961	24.155
1962	24.315
1963	24.489
1964	24.841
1965	25.216
1966	25.578
1967	25.939
1968	26.243
1969	26.44
1970	26.489
1971	26.328
1972	26.036
1973	26.056
1974	26.564
1975	26.956
1976	27.347
1977	27.468
1978	27.496
1979	27.27
1980	26.725
1981	25.947
1982	25.089
1983	24.601
1984	24.298
1985	24.096
1986	24.328
1987	24.499
1988	24.357
1989	23.916
1990	23.334
1991	22.947
1992	22.894
1993	22.479
1994	21.844
1995	21.217
1996	20.393
1997	19.362
1998	18.222
1999	17.031
2000	16.118
2001	15.387
2002	14.671
2003	14.133
2004	13.721
2005	12.8
2006	13.7
2007	11.7
2008	13
2009	12.5
2010	13.1
2011	12.9
2012	12
2013	14
2014	14.1
2015	12.9
2016	11.5
2017	9
2018	10.1
2019	9.6
2020	10
2021	8.7
2022	8.1