Year % of urban population 2000 5.4 2001 6.6 2002 8 2003 9.5 2004 11.3 2005 13 2006 14.5 2007 16.1 2008 17.1 2009 18.9 2010 19.8 2011 21.1 2012 22.8 2013 24.5 2014 26.8 2015 29.4 2016 33 2017 37.4 2018 41.8 2019 45.8 2020 50.9 2021 56.1 2022 61