Footnotes  
a    2017
b    2018
c    Data classified according to ISIC Rev. 4.
d    Estimate.
e    2016
f    Data refers to a 5-year period preceding the reference year.
g    2015
h    Including refugees.
i    Data as at the end of December.
j    Data revision.
k    2002
l    2014
m    2009
n    Break in the time series.
o    2004
p    Excluding nationals residing abroad.