a    Projected estimate (medium fertility variant).
b    2015
c    Refers to Grand Tunis.
d    2016
e    At factor cost.
f    Estimate.
g    Break in the time series.
h    2017
i    2014
j    Data refers to a 5-year period preceding the reference year.
k    Refers to foreign citizens.
l    Including refugees.
m    Data as at the end of December.
n    2012
o    2004
p    Excluding nationals residing abroad.