Year	% of children under 5
1991	1.9
1996	1.6
2000	1.1
2005	1
2007	0.8
2009	0.6
2010	0.7
2011	0.4
2012	0.6
2013	0.4
2014	0.6
2015	0.6
2016	0.6
2017	0.5
2018	0.5
2019	0.4
2020	0.4
2021	0.4
2022	0.5