a    2017
b    De jure population.
c    2015
d    2018
e    Data classified according to ISIC Rev. 4.
f    Data classified according to ISIC Rev. 3.
g    Break in the time series.
h    2013
i    Resident population (de jure).
j    2009
k    Calculated by the UN Statistics Division from national indices.
l    2016
m    Estimate.
n    Data refers to a 5-year period preceding the reference year.
o    2007
p    Data are based on a small number of deaths.
q    2006
r    Excluding the institutional population.
s    Population aged 65 years and over.
t    Refers to foreign citizens.
u    Data as at the end of December.
v    2014
w    2004
x    Arrivals by air.