Year	World Bank (% of population)
2008	3.1
2009	3.2
2010	3.4
2011	3.5
2012	3
2013	5.5
2014	5.6
2015	5
2016	4.8
2017	4.2
2018	3.9
2019	3.6
2020	4.2
2021	3.5