Year	% of children under 5
1990	44.1
1991	42.8
1992	41.8
1993	40.6
1994	39.7
1995	38.7
1996	37.9
1997	37.1
1998	36.2
1999	35.7
2000	35.1
2001	34.9
2002	34.7
2003	34.7
2004	34.7
2005	34.7
2006	34.5
2007	34.2
2008	33.6
2009	33
2010	32.5
2011	32
2012	31.5
2013	31.2
2014	31
2015	31
2016	31.1