a    Projected estimate (medium fertility variant).
b    2015
c    Data refers to the urban agglomeration.
d    2017
e    2016
f    Data classified according to ISIC Rev. 4.
g    Estimate.
h    Rural and urban areas.
i    Data refers to a 5-year period preceding the reference year.
j    Refers to foreign citizens.
k    Including refugees.
l    Data as at the end of December.
m    2009
n    2013
o    2011
p    Excluding business enterprise.
q    2007
r    2004
s    2014