a    Projected estimate (medium fertility variant).
b    2015
c    Refers to the functional urban area.
d    2017
e    2016
f    Data classified according to ISIC Rev. 4.
g    Estimate.
h    Break in the time series.
i    Data refers to a 5-year period preceding the reference year.
j    Including refugees.
k    Data as at the end of December.
l    2003
m    2012
n    2004
o    Partial data.
p    2001
q    2009
r    2013
s    2014