Year	% of children under 5
1990	44
1991	43
1992	42.1
1993	41.4
1994	40.8
1995	40.4
1996	40
1997	39.7
1998	39.3
1999	39.1
2000	38.9
2001	38.8
2002	38.6
2003	38.5
2004	38.2
2005	37.9
2006	37.4
2007	36.8
2008	36.1
2009	35.2
2010	34.1
2011	33
2012	31.9
2013	30.8
2014	29.8
2015	29
2016	28.3