Year	per 1,000 live births
1978	16.5
1979	15.5
1980	14.2
1981	13
1982	11.9
1983	10.9
1984	10.2
1985	9.6
1986	9
1987	8.7
1988	8.3
1989	8.1
1990	7.8
1991	7.6
1992	7.3
1993	7
1994	6.6
1995	6.3
1996	6.2
1997	6.1
1998	6.1
1999	6
2000	5.8
2001	5.7
2002	5.6
2003	5.5
2004	5.5
2005	5.4
2006	5.2
2007	5
2008	4.6
2009	4.1
2010	3.6
2011	3.4
2012	3.6
2013	3.9
2014	4.1
2015	4.2
2016	4.1
2017	3.8
2018	3.6
2019	3.3
2020	3
2021	2.8
2022	2.6