Year	per 1,000 people
1960	32.481
1961	31.487
1962	30.614
1963	29.863
1964	29.2
1965	28.593
1966	27.997
1967	27.292
1968	26.508
1969	25.605
1970	24.646
1971	23.674
1972	22.793
1973	22.129
1974	21.555
1975	21.139
1976	20.883
1977	20.733
1978	20.64
1979	20.591
1980	20.556
1981	20.57
1982	20.643
1983	20.707
1984	20.794
1985	20.878
1986	20.927
1987	20.907
1988	20.79
1989	20.564
1990	20.212
1991	19.731
1992	19.143
1993	18.423
1994	17.778
1995	17.185
1996	16.64
1997	16.209
1998	15.886
1999	15.615
2000	15.371
2001	15.155
2002	14.988
2003	14.87
2004	14.755
2005	14.673
2006	13.6
2007	13.4
2008	13.8
2009	13
2010	13.6
2011	13.1
2012	13.4
2013	12.7
2014	12.6
2015	11.9
2016	11.2
2017	9.7
2018	10.5
2019	10.1
2020	8.7
2021	8.6
2022	8.2