Year	per 1,000 live births
1981	22.1
1982	21
1983	20
1984	19
1985	18
1986	16.9
1987	15.8
1988	14.8
1989	13.8
1990	12.9
1991	13.4
1992	11.5
1993	10.9
1994	10.4
1995	10
1996	9.6
1997	9.3
1998	8.9
1999	8.6
2000	8.3
2001	8
2002	7.7
2003	7.4
2004	7
2005	6.7
2006	6.4
2007	6.1
2008	5.9
2009	5.7
2010	5.5
2011	5.3
2012	5.2
2013	5.1
2014	5
2015	4.9
2016	4.9
2017	4.8
2018	4.8
2019	4.7
2020	4.7
2021	4.6
2022	4.6