Every two years modeled estimate, % of children under 5 2000 18.4 2001 18.7 2002 19.1 2003 19.7 2004 20.4 2005 21.2 2006 22 2007 23 2008 23.9 2009 25 2010 26.3 2011 27.9 2012 30 2013 32.2 2014 34.7 2015 37.7 2016 40.7 2017 43.1 2018 45.6 2019 47.9 2020 49.6 2021 51 2022 52.2