a    Including Kosovo.
b    Changes in total area per year are the result of new measuring and correcting of the administrative borders between former Yugoslavian countries.
c    2017
d    Refers to the urban population of Belgrade area.
e    2019
f    2018
g    Data classified according to ISIC Rev. 4.
h    Excludes publishing activities. Includes irrigation and canals.
i    Excludes repair of personal and household goods.
j    Excludes computer and related activities and radio/TV activities.
k    Estimate.
l    2016
m    Special trade system up to 2008.
n    Data refers to a 5-year period preceding the reference year.
o    Data as at the end of December.
p    Excluding Kosovo and Metohija.
q    Data are as at 1 January of reporting year.
r    Population aged 16 to 74 years.
s    Excluding data from some regions, provinces or states.
t    Excluding Kosovo.