Year	World Bank (% of population)
2009	25.7
2010	26
2011	27.3
2012	26
2013	23.5
2014	22.5
2015	23.9
2016	21.5
2017	21.1
2018	19.7
2019	15.8
2020	15
2021	15
2022	9.6