a    2017
b    African Financial Community (CFA) Franc, Bank of Central African States (BEAC).
c    2019
d    2018
e    Estimate.
f    Libreville and Owendo.
g    2016
h    Data refers to a 5-year period preceding the reference year.
i    Refers to foreign citizens.
j    Data as at the end of December.
k    2008
l    2014
m    2011
n    Data are as at 1 January of reporting year.
o    Population aged 18 years and over.
p    At least once a month.
q    2009
r    Arrivals of non-resident tourists at Libreville airport.
s    2005