a    2017
b    Refers to the localities of Calithèa, Peristérion and Piraeus, among others.
c    2018
d    Data classified according to ISIC Rev. 4.
e    Estimate.
f    Calculated by the UN Statistics Division from national indices.
g    2016
h    2014
i    Data refers to a 5-year period preceding the reference year.
j    2015
k    Data as at the end of December.
l    Population aged 16 to 74 years.
m    2004
n    Development Assistance Committee member (OECD).