a    Projected estimate (medium fertility variant).
b    2019
c    2020
d    Estimate.
e    Areas not elsewhere specified.
f    Data refers to a 5-year period preceding the reference year.
g    Including refugees.
h    Data as at the end of December.
i    2018
j    2017
k    Data are as at 1 January of reporting year.
l    Users in the last 3 months.
m    Break in the time series.
n    Partial data.