a    2017
b    Refers to Grande Lisboa, the Peninsula of Setúbal, and the municipality Azambuja.
c    2018
d    Data classified according to ISIC Rev. 4.
e    Estimate.
f    Calculated by the UN Statistics Division from national indices.
g    Excluding rent.
h    2016
i    2014
j    Data refers to a 5-year period preceding the reference year.
k    2015
l    Data as at the end of December.
m    Population aged 16 to 74 years.
n    Provisional data.
o    2004
p    Data includes the Azores and Madeira.
q    Include hotels, apartment hotels, “pousadas”, tourist apartments, tourist villages, camping sites, recreation centres, tourism in rural areas and local accommodation.
r    Development Assistance Committee member (OECD).