Every two years modeled estimate, % of children under 5 2000 4.5 2001 4.7 2002 4.9 2003 5.1 2004 5.4 2005 5.6 2006 5.9 2007 6.1 2008 6.2 2009 6.3 2010 6.3 2011 6.2 2012 6 2013 5.7 2014 5.5 2015 5.2 2016 4.9 2017 4.6 2018 4.3 2019 4 2020 3.8 2021 3.5 2022 3.3