Year	% of urban population
2000	0.4
2001	0.4
2002	0.5
2003	0.6
2004	0.7
2005	0.8
2006	0.9
2007	1.1
2008	1.2
2009	1.4
2010	1.6
2011	1.8
2012	2.1
2013	2.3
2014	2.7
2015	2.9
2016	3.2
2017	3.4
2018	3.7
2019	4
2020	4.5
2021	4.8
2022	5