Year	Per 1000 Births
1987	51.5
1988	49.8
1989	48.4
1990	46.9
1991	45.5
1992	44
1993	42.8
1994	41.4
1995	40
1996	38.8
1997	37.2
1998	35.7
1999	34.2
2000	32.6
2001	31.3
2002	30.1
2003	28.7
2004	27.5
2005	26.4
2006	25.4
2007	24.3
2008	23.4
2009	22.3
2010	21.5
2011	20.5