a    2017
b    African Financial Community (CFA) Franc, Central Bank of West African States (BCEAO).
c    2019
d    2018
e    Estimate.
f    Ouagadougou
g    2016
h    Data refers to a 5-year period preceding the reference year.
i    Including refugees.
j    Data as at the end of December.
k    Data are as at 1 January of reporting year.
l    At least once a month.
m    Population aged 18 years and over.
n    2009
o    Excluding business enterprise.
p    Break in the time series.
q    2014