a    2017
b    Refers to the urban population of the province of Luanda.
c    2019
d    2018
e    Estimate.
f    Luanda
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    2009
l    2011
m    2012
n    Data are as at 1 January of reporting year.
o    Excluding business enterprise.
p    Excluding private non-profit.
q    Partial data.