a    Projected estimate (medium fertility variant).
b    2015.
c    2016.
d    Estimate.
e    2014.
f    Data classified according to ISIC Rev. 3.
g    2013.
h    Data refers to a 5-year period preceding the reference year.
i    Including refugees.
j    Refers to foreign citizens.
k    Data as at the end of December.
l    2009.
m    2006.
n    2004.
o    2012.
p    Does not include data from all operators.
q    Partial data.
r    Government only.
s    Excluding business enterprise.
t    Break in the time series.
u    Excluding private non-profit.
v    The data for crude oil production include 50 per cent of the output of the Neutral Zone.