Year	% of children under 5
1990	31.9
1991	31.1
1992	30.4
1993	29.6
1994	29.1
1995	28.7
1996	28.4
1997	28.1
1998	27.9
1999	27.8
2000	27.9
2001	28
2002	28.1
2003	28.2
2004	28.4
2005	28.5
2006	28.5
2007	28.5
2008	28.5
2009	28.3
2010	28.2
2011	28.1
2012	28
2013	28
2014	28
2015	28.2
2016	28.4