Year	Per 1000 Births
1970	27.96
1971	27.9
1972	27
1973	26.2
1974	25.5
1975	25
1976	24.6
1977	24.2
1978	23.8
1979	23.4
1980	23
1981	22.4
1982	21.7
1983	20.9
1984	20.1
1985	19.3
1986	18.6
1987	17.9
1988	17.3
1989	16.9
1990	16.7
1991	16.7
1992	16.8
1993	17
1994	17.3
1995	17.5
1996	17.5
1997	17.4
1998	17
1999	16.5
2000	15.8
2001	15.1
2002	14.3
2003	13.6
2004	13
2005	12.5
2006	12
2007	11.6
2008	11.1
2009	10.6
2010	10.1
2011	9.6
2012	9.1
2013	8.6
2014	8.1
2015	7.7