Every two years modeled estimate, % of children under 5 2000 50.5 2001 49.3 2002 48.2 2003 47 2004 45.9 2005 44.7 2006 43.6 2007 42.3 2008 40.8 2009 39.2 2010 37.4 2011 35.6 2012 33.8 2013 32 2014 30.4 2015 29 2016 27.7 2017 26.6 2018 25.6 2019 24.7 2020 23.8 2021 23 2022 22.3