a    2017
b    African Financial Community (CFA) Franc, Bank of Central African States (BEAC).
c    2018
d    Data classified according to ISIC Rev. 4.
e    Estimate.
f    Provisional data.
g    2016
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 manufacturing and utilities only.
k    2012
l    Data refers to a 5-year period preceding the reference year.
m    2015
n    Data as at the end of December.
o    2011
p    2009
q    2003
r    2004
s    2014