Year	Per 1000 Births
1963	52
1975	31
1987	38
1991	35
1992	30.5
1993	30.5
1994	32.1
1997	30.7
1998	30
1999	30.4
2000	30.8
2001	30.3
2002	29.8
2003	29.1
2004	28
2006	24.3
2007	23.58
2008	23.28
2009	22.98
2010	22.68