Year World Bank (% of population) 2008 0.9 2009 1.2 2010 0.9 2011 0.8 2012 0.7 2013 0.6 2014 0.6 2015 0.6 2016 0.5 2017 0.4 2018 0.3 2019 0.4 2020 0.5