Year	Per 1000 Births
1970	26.2
1971	24.6
1972	23.2
1973	21.8
1974	20.4
1975	19.2
1976	18
1977	17
1978	15.9
1979	15
1980	14.1
1981	13.3
1982	12.4
1983	11.7
1984	11
1985	10.3
1986	9.7
1987	9.1
1988	8.6
1989	8
1990	7.6
1991	7.1
1992	6.7
1993	6.3
1994	5.9
1995	5.6
1996	5.2
1997	4.9
1998	4.6
1999	4.3
2000	4.1
2001	3.8
2002	3.6
2003	3.4
2004	3.2
2005	3
2006	2.8
2007	2.6
2008	2.5
2009	2.3
2010	2.2
2011	2.1
2012	1.9
2013	1.8
2014	1.7
2015	1.6