Year	per 1,000 live births
1981	19.3
1982	18.4
1983	17.5
1984	16.6
1985	15.7
1986	14.7
1987	13.8
1988	12.9
1989	12
1990	11.2
1991	11
1992	10
1993	9.5
1994	9
1995	8.7
1996	8.3
1997	8
1998	7.7
1999	7.4
2000	7.2
2001	6.9
2002	6.6
2003	6.3
2004	6
2005	5.8
2006	5.5
2007	5.3
2008	5
2009	4.8
2010	4.7
2011	4.5
2012	4.4
2013	4.3
2014	4.2
2015	4.2
2016	4.1
2017	4.1
2018	4
2019	4
2020	4
2021	3.9
2022	3.9