a    Projected estimate (medium fertility variant).
b    2015.
c    Refers to the Greater Copenhagen Region, consisting of (parts of) 16 municipalities.
d    2016.
e    Data classified according to ISIC Rev. 4.
f    Estimate.
g    2014.
h    Excluding water and waste management.
i    Data refers to a 5-year period preceding the reference year.
j    Data as at the end of December.
k    2013.
l    Excludes telemetry subscriptions.
m    Break in the time series.
n    Population aged 16 to 74 years.
o    2004.
p    Excluding the Faroe Islands and Greenland.
q    Development Assistance Committee member (OECD)
r    Provisional data.