Year	World Bank (% of population)
2008	0.7
2009	1
2010	1
2011	0.9
2012	0.8
2013	1.1
2014	0.7
2015	1.6
2016	1.6
2017	1.6
2018	1.6
2019	1.8
2020	2
2021	2