Year	World Bank (% of population)
2008	2.5
2009	2.8
2010	3.4
2011	2.8
2012	2.8
2013	2.8
2014	2.7
2015	3.8
2016	3.1
2017	2.9
2018	2.9
2019	2.5
2020	2.4
2021	2.5