Year	per 1,000 live births
1990	9.5
1991	9.1
1992	8.7
1993	8.3
1994	8
1995	7.6
1996	7.2
1997	7
1998	6.7
1999	6.5
2000	6.2
2001	6
2002	5.9
2003	5.7
2004	5.6
2005	5.4
2006	5.3
2007	5.1
2008	5
2009	4.8
2010	4.7
2011	4.6
2012	4.5
2013	4.4
2014	4.3
2015	4.2
2016	4.2
2017	4.1
2018	4
2019	4
2020	3.9
2021	3.9
2022	3.8