Footnotes  
a    2017
b    2018
c    Data classified according to ISIC Rev. 4.
d    Estimate.
e    2016
f    Data classified according to ISIC Rev. 3.
g    2011
h    Data refers to a 5-year period preceding the reference year.
i    2015
j    Data as at the end of December.
k    2014
l    Excluding private non-profit.
m    2004
n    2002