a    Projected estimate (medium fertility variant).
b    2015
c    2017
d    2016
e    Data classified according to ISIC Rev. 4.
f    Estimate.
g    Break in the time series.
h    Asia not elsewhere specified.
i    Data refers to a 5-year period preceding the reference year.
j    Refers to foreign citizens.
k    Including refugees.
l    2003
m    2008
n    2006
o    Partial data.
p    2004
q    2009
r    Excluding private non-profit.
s    Excluding business enterprise.
t    2014