Year	Per 1000 Births
1979	23.7
1980	22.8
1981	22.1
1982	21.4
1983	20.7
1984	20
1985	19.4
1986	18.7
1987	18.2
1988	17.7
1989	17.4
1990	17.2
1991	17
1992	17
1993	16.9
1994	16.9
1995	16.8
1996	16.5
1997	16
1998	15.4
1999	14.6
2000	13.7
2001	12.8
2002	11.9
2003	11
2004	10.1
2005	9.3
2006	8.6
2007	7.9
2008	7.3
2009	6.7
2010	6.1
2011	5.6