Every two years	modeled estimate, % of children under 5
2000	2.4
2001	2.4
2002	2.4
2003	2.3
2004	2.3
2005	2.2
2006	2.2
2007	2.2
2008	2.1
2009	2.1
2010	2.1
2011	2.1
2012	2.1
2013	2
2014	2
2015	2
2016	2
2017	1.9
2018	1.9
2019	1.9
2020	1.9
2021	1.9
2022	2