Year	% of children under 5
1990	42.5
1991	41.8
1992	41
1993	40.5
1994	40
1995	39.6
1996	39.1
1997	38.9
1998	38.6
1999	38.4
2000	38.4
2001	38.7
2002	38.8
2003	39.2
2004	39.3
2005	39.4
2006	39.1
2007	38.6
2008	37.8
2009	36.9
2010	36.2
2011	35.3
2012	34.4
2013	33.6
2014	32.8
2015	32.2
2016	31.7