Year	Per 1000 Births
1980	19.1
1981	18.6
1982	18.2
1983	17.7
1984	17.3
1985	16.8
1986	16.3
1987	15.9
1988	15.5
1989	15
1990	14.3
1991	13.5
1992	12.7
1993	11.9
1994	11
1995	10.1
1996	9.2
1997	8.4
1998	7.7
1999	7.2
2000	6.7
2001	6.3
2002	6
2003	5.7
2004	5.5
2005	5.2
2006	5
2007	4.7
2008	4.5
2009	4.3
2010	4.1
2011	3.9