Every two years modeled estimate, % of children under 5 2000 2.6 2001 2.6 2002 2.5 2003 2.5 2004 2.4 2005 2.3 2006 2.3 2007 2.2 2008 2.1 2009 2 2010 2 2011 1.9 2012 1.9 2013 1.8 2014 1.8 2015 1.8 2016 1.8 2017 1.8 2018 1.8 2019 1.8 2020 1.8 2021 1.7 2022 1.7