Year	% of urban population
2000	3.2
2001	3.6
2002	4.2
2003	4.7
2004	5.4
2005	6.1
2006	7
2007	7.6
2008	8.5
2009	9.4
2010	10.3
2011	11.2
2012	12
2013	12.9
2014	13.8
2015	14.7
2016	15.7
2017	16.7
2018	17.7
2019	18.3
2020	19.3
2021	20.3
2022	21.2