Year	% of children under 5
1990	43.4
1991	41.9
1992	40.3
1993	38.8
1994	37.5
1995	36.1
1996	35
1997	33.8
1998	32.7
1999	31.6
2000	30.7
2001	29.7
2002	29.1
2003	28.5
2004	28.1
2005	27.8
2006	27.6
2007	27.4
2008	27.4
2009	27.5
2010	27.7
2011	28.1
2012	28.5
2013	29
2014	29.7
2015	30.5
2016	31.3