Year	% of children under 5
1990	40
1991	38.7
1992	37.5
1993	36.2
1994	35
1995	34.1
1996	33.2
1997	32.3
1998	31.6
1999	30.9
2000	30.5
2001	30.1
2002	30
2003	29.7
2004	29.7
2005	29.4
2006	29.1
2007	28.9
2008	28.5
2009	28.2
2010	28
2011	27.8
2012	27.6
2013	27.5
2014	27.6
2015	27.7
2016	28