a    2017
b    African Financial Community (CFA) Franc, Central Bank of West African States (BCEAO).
c    2019
d    2018
e    Construction refers to buildings and public works.
f    Refers to trade only.
g    Estimate.
h    2016
i    Data refers to a 5-year period preceding the reference year.
j    Including refugees.
k    Refers to foreign citizens.
l    Data as at the end of December.
m    2007
n    Data are as at 1 January of reporting year.
o    Excluding business enterprise.
p    Excluding private non-profit.
q    2014