Year % of children under 5 1991 9.7 1996 6.4 2000 5.2 2005 6 2007 4.2 2009 4.9 2010 4.8 2011 4.1 2012 3.7 2013 4.3 2014 3.4 2015 3.5 2016 3.3 2017 3.6 2018 2.6 2019 2.6 2020 2.3 2021 2.2 2022 2.6