Year	Per 1000 Births
1970	39.7
1971	39
1972	38.3
1973	37.6
1974	37
1975	36.3
1976	35.7
1977	35
1978	34.4
1979	33.8
1980	33.2
1981	32.6
1982	32.1
1983	31.5
1984	31
1985	30.5
1986	30
1987	29.5
1988	29.1
1989	28.5
1990	27.8
1991	27.2
1992	26.6
1993	26
1994	25.5
1995	25
1996	24.5
1997	24
1998	23.5
1999	23.1
2000	22.6
2001	22.1
2002	21.7
2003	21.3
2004	20.9
2005	20.5
2006	20.1
2007	19.7
2008	19.3
2009	18.9
2010	18.6
2011	18.2
2012	17.8
2013	17.5
2014	17.2
2015	16.8