Every two years modeled estimate, % of children under 5 2000 3.1 2001 3.3 2002 3.5 2003 3.5 2004 3.2 2005 2.8 2006 2.4 2007 2 2008 1.7 2009 1.6 2010 1.5 2011 1.5 2012 1.5 2013 1.6 2014 1.6 2015 1.7 2016 1.8 2017 1.9 2018 2.1 2019 2.3 2020 2.6 2021 3 2022 3.4