Year	per 1,000 live births
1977	24.9
1978	24.7
1979	24.5
1980	24.2
1981	23.9
1982	23.5
1983	23
1984	22.4
1985	21.8
1986	21.1
1987	20.4
1988	19.8
1989	19.4
1990	19
1991	18.8
1992	18.8
1993	18.7
1994	18.7
1995	18.6
1996	18.4
1997	18.1
1998	17.7
1999	17.2
2000	16.6
2001	16
2002	15.3
2003	14.6
2004	13.9
2005	13.4
2006	12.9
2007	12.6
2008	12.3
2009	12.2
2010	12.2
2011	12.2
2012	12.2
2013	12.3
2014	12.2
2015	12.2
2016	12
2017	11.8
2018	11.5
2019	11.2
2020	10.9
2021	10.6
2022	10.3