a    2017
b    2018
c    Data classified according to ISIC Rev. 4.
d    Estimate.
e    Calculated by the UN Statistics Division from national indices.
f    2016
g    Data refers to a 5-year period preceding the reference year.
h    2015
i    Data as at the end of December.
j    2004
k    Population aged 10 years and over.
l    Partial data.
m    Higher Education only.
n    2011
o    2014
p    Non-resident tourists staying in hotels and similar establishments.