Year	Per 1000 Births
1970	22.6
1971	21.7
1972	20.8
1973	19.9
1974	19
1975	18.2
1976	17.4
1977	16.6
1978	15.9
1979	15.2
1980	14.5
1981	13.8
1982	13.2
1983	12.7
1984	12.2
1985	11.7
1986	11.2
1987	10.8
1988	10.4
1989	10
1990	9.6
1991	9.2
1992	8.8
1993	8.5
1994	8.1
1995	7.8
1996	7.5
1997	7.2
1998	6.9
1999	6.7
2000	6.4
2001	6.2
2002	5.9
2003	5.7
2004	5.5
2005	5.3
2006	5.1
2007	4.9
2008	4.7
2009	4.5
2010	4.3
2011	4.1
2012	4
2013	3.8
2014	3.7
2015	3.5