a    2017
b    Refers to urban population in the city districts.
c    2018
d    Data classified according to ISIC Rev. 4.
e    At producers' prices.
f    Estimate.
g    2016
h    2014
i    Data refers to a 5-year period preceding the reference year.
j    2015
k    Including refugees.
l    Refers to foreign citizens.
m    Data as at the end of December.
n    Data revision.
o    2013
p    2011
q    2002
r    2004