Year % of urban population 2000 15.4 2001 17.7 2002 20.3 2003 23.3 2004 26.1 2005 28.9 2006 32 2007 35.2 2008 38.3 2009 41.3 2010 44.4 2011 47.75 2012 50.6 2013 53.8 2014 56.9 2015 59.8 2016 62.7 2017 65.7 2018 68.6 2019 71.3 2020 73.9 2021 76.2 2022 78.4