a    Projected estimate (medium fertility variant).
b    2015.
c    2016.
d    Estimate.
e    N'Djamena
f    2013.
g    2014.
h    Data classified according to ISIC Rev. 3.
i    Country data supplemented with data from the Observatoire Economique et Statistique d´Afrique Subsaharienne (Afristat).
j    Data refers to a 5-year period preceding the reference year.
k    Including refugees.
l    Data as at the end of December.
m    Estimates should be viewed with caution as these are derived from scarce data.
n    2004.
o    2006.
p    2012.