Year	per 1,000 people
1960	9.474
1961	9.194
1962	8.927
1963	8.672
1964	8.505
1965	8.423
1966	8.255
1967	8.308
1968	8.398
1969	8.293
1970	8.59
1971	8.521
1972	8.543
1973	8.548
1974	8.535
1975	8.482
1976	8.499
1977	8.404
1978	8.366
1979	8.265
1980	8.178
1981	8.343
1982	8.554
1983	8.539
1984	8.696
1985	9.042
1986	9.109
1987	9.236
1988	9.447
1989	9.467
1990	9.701
1991	9.762
1992	9.822
1993	9.638
1994	9.729
1995	9.863
1996	9.735
1997	9.781
1998	9.705
1999	9.509
2000	9.47
2001	9.338
2002	9.296
2003	9.329
2004	9.258
2005	9.218
2006	9.082
2007	8.985
2008	9.026
2009	8.937
2010	9.037
2011	8.952
2012	8.879
2013	8.851
2014	8.797
2015	8.772
2016	8.792
2017	8.85
2018	8.927
2019	8.91
2020	8.973
2021	9.007
2022	9.114