Year	per 1,000 people
1960	20.86
1961	18.02
1962	37.01
1963	43.37
1964	39.14
1965	37.88
1966	35.05
1967	33.96
1968	35.59
1969	34.11
1970	33.43
1971	30.65
1972	29.77
1973	27.93
1974	24.82
1975	23.01
1976	19.91
1977	18.93
1978	18.25
1979	17.82
1980	18.21
1981	20.91
1982	22.28
1983	20.19
1984	19.9
1985	21.04
1986	22.43
1987	23.33
1988	22.37
1989	21.58
1990	21.06
1991	19.68
1992	18.27
1993	18.09
1994	17.7
1995	17.12
1996	16.98
1997	16.57
1998	15.64
1999	14.64
2000	14.03
2001	13.38
2002	12.86
2003	12.41
2004	12.29
2005	12.4
2006	12.09
2007	12.1
2008	12.14
2009	11.95
2010	11.9
2011	13.27
2012	14.57
2013	13.03
2014	13.83
2015	11.99
2016	13.57
2017	12.64
2018	10.86
2019	10.41
2020	8.52
2021	7.52
2022	6.77