a    2017
b    Refers to the Greater Copenhagen Region, consisting of (parts of) 16 municipalities.
c    2019
d    2018
e    Data classified according to ISIC Rev. 4.
f    Excludes publishing activities. Includes irrigation and canals.
g    Excludes repair of personal and household goods.
h    Excludes computer and related activities and radio/TV activities.
i    Estimate.
j    Calculated by the UN Statistics Division from national indices.
k    2016
l    Undisclosed (Special categories).
m    Data refers to a 5-year period preceding the reference year.
n    Data as at the end of December.
o    2014
p    Data are as at 1 January of reporting year.
q    Population aged 16 to 74 years.
r    Provisional data.
s    Excluding the Faroe Islands and Greenland.
t    Break in the time series.
u    Development Assistance Committee member (OECD).