Year	Per 1000 Births
1964	177.2
1965	176.3
1966	176.1
1967	175.5
1968	175.5
1969	175.3
1970	175.6
1971	175.4
1972	175.5
1973	175.6
1974	175.5
1975	175.4
1976	175.2
1977	175.1
1978	175
1979	175.6
1980	176.2
1981	177.5
1982	177.3
1983	177.5
1984	177.1
1985	176.2
1986	174.6
1987	171.8
1988	168.7
1989	166
1990	161.2
1991	155.6
1992	150.2
1993	144.2
1994	137.7
1995	131.6
1996	125.2
1997	119.8
1998	114
1999	108.7
2000	104.1
2001	98.9
2002	94.4
2003	90.1
2004	85.8
2005	81.8
2006	77.4
2007	74.2
2008	70.8
2009	67.2
2010	64.3
2011	61.6