Year	Per 1000 Births
1970	17.4
1971	16.7
1972	16
1973	15.4
1974	14.7
1975	14
1976	13.4
1977	12.9
1978	12.4
1979	11.9
1980	11.4
1981	10.9
1982	10.5
1983	10.1
1984	9.7
1985	9.4
1986	9
1987	8.7
1988	8.5
1989	8.2
1990	7.9
1991	7.6
1992	7.3
1993	7.1
1994	6.8
1995	6.6
1996	6.3
1997	6.1
1998	5.9
1999	5.8
2000	5.6
2001	5.4
2002	5.2
2003	5.1
2004	4.9
2005	4.7
2006	4.6
2007	4.4
2008	4.2
2009	4.1
2010	4
2011	3.8
2012	3.7
2013	3.6
2014	3.4
2015	3.3