Year % of children under 5 1990 54.6 1991 54.1 1992 53.8 1993 53.5 1994 53.3 1995 52.9 1996 52.4 1997 51.9 1998 51.4 1999 50.9 2000 50.3 2001 49.8 2002 49.2 2003 48.7 2004 47.9 2005 46.7 2006 45.5 2007 44.2 2008 42.7 2009 41.1 2010 39.5 2011 37.9 2012 36.4 2013 35.1 2014 33.9 2015 32.8 2016 31.9