Year % of children under 5 1986 0.2 1990 0.6 1991 0.3 1992 0.2 1993 0.4 1994 0.2 1995 0.2 1996 0.3 1997 2.4 1998 0.2 1999 0.6 2000 0.9 2001 0.9 2002 1 2003 1 2004 0.9 2005 1 2006 0.8 2007 1.1 2011 1.9 2013 1.6 2014 1.6 2015 1.4 2018 2.2 2019 2.4 2022 1.5