Year	% of urban population
2000	1
2001	1.4
2002	1.8
2003	2.4
2004	3
2005	3.8
2006	4.6
2007	5.6
2008	6.6
2009	7.5
2010	8.6
2011	9.7
2012	10.5
2013	11.6
2014	12.5
2015	13.6
2016	14.6
2017	15.7
2018	16.8
2019	17.8
2020	19.2
2021	20
2022	21.2