a    Projected estimate (medium fertility variant).
b    2015
c    2017
d    2016
e    Data classified according to ISIC Rev. 4.
f    Estimate.
g    Break in the time series.
h    Data refers to a 5-year period preceding the reference year.
i    Refers to foreign citizens.
j    Data revision.
k    2004
l    2009
m    2003
n    2008
o    2014
p    2013
q    Excluding mobile internet users.
r    Population aged 15 years and over.
s    Arrivals by air.