Every two years modeled estimate, % of children under 5 2000 4.9 2001 5.6 2002 6.1 2003 6.3 2004 6 2005 5.3 2006 4.6 2007 3.9 2008 3.3 2009 3 2010 2.8 2011 2.7 2012 2.6 2013 2.6 2014 2.5 2015 2.5 2016 2.5 2017 2.5 2018 2.5 2019 2.5 2020 2.5 2021 2.6 2022 2.6