a    2017
b    2019
c    2018
d    Data classified according to ISIC Rev. 4.
e    Excludes publishing activities. Includes irrigation and canals.
f    Excludes computer and related activities and radio/TV activities.
g    Excludes repair of personal and household goods.
h    Estimate.
i    Calculated by the UN Statistics Division from national indices.
j    2016
k    Areas not elsewhere specified.
l    Data refers to a 5-year period preceding the reference year.
m    Refers to foreign citizens.
n    Including refugees.
o    Data as at the end of December.
p    2014
q    2008
r    2009
s    2007
t    Data are as at 1 January of reporting year.
u    Population aged 12 to 65 years.
v    Based on R&D budget instead of R&D expenditure.
w    Break in the time series.
x    Overestimated or based on overestimated data.
y    2013
z    The data for crude oil production include 50 per cent of the output of the Neutral Zone.