Every two years modeled estimate, % of children under 5 2000 3.4 2001 3.5 2002 3.6 2003 3.5 2004 3.4 2005 3.2 2006 3 2007 2.7 2008 2.5 2009 2.3 2010 2.1 2011 2 2012 1.8 2013 1.7 2014 1.7 2015 1.6 2016 1.6 2017 1.5 2018 1.5 2019 1.5 2020 1.5 2021 1.5 2022 1.5