Year	% of children under 5
1990	44.9
1991	44.1
1992	43.3
1993	42.7
1994	42.2
1995	41.8
1996	41.2
1997	40.7
1998	40.2
1999	40
2000	39.7
2001	39.6
2002	39.6
2003	39.6
2004	39.7
2005	39.6
2006	39.5
2007	39.5
2008	39.4
2009	39.3
2010	39.2
2011	39.1
2012	39
2013	38.9
2014	38.9
2015	39
2016	39.1