a    2017
b    Refers to the Governorate of Grand Algiers.
c    2019
d    2018
e    Estimate.
f    Algiers
g    Calculated by the UN Statistics Division from national indices.
h    2016
i    Data refers to a 5-year period preceding the reference year.
j    Including refugees.
k    Data as at the end of December.
l    2007
m    2008
n    2011
o    Data are as at 1 January of reporting year.
p    Partial data.
q    2005
r    Break in the time series.
s    Including nationals residing abroad.