Year	per 1,000 people
1960	33.021
1961	33.606
1962	33.927
1963	32.442
1964	32.08
1965	31.671
1966	32.904
1967	31.39
1968	30.949
1969	32.586
1970	32.48
1971	32.07
1972	31.609
1973	31.266
1974	31.56
1975	32.04
1976	32.336
1977	31.317
1978	29.458
1979	29.19
1980	29.212
1981	28.186
1982	27.274
1983	28.323
1984	26.93
1985	27.654
1986	28.078
1987	27.627
1988	27.084
1989	26.815
1990	26.543
1991	26.225
1992	25.857
1993	25.511
1994	25.236
1995	24.976
1996	24.811
1997	24.631
1998	24.523
1999	24.203
2000	23.89
2001	23.146
2002	20.85
2003	21.092
2004	21.751
2005	20.404
2006	21.47
2007	21.927
2008	21.682
2009	21.335
2010	21.169
2011	20.088
2012	21.422
2013	19.469
2014	19.615
2015	19.15
2016	19.123
2017	17.997
2018	17.02
2019	16.624
2020	16.363
2021	16.376
2022	16.374