a    2017
b    2018
c    Estimate.
d    2016
e    Data classified according to ISIC Rev. 3.
f    2008
g    Data refers to a 5-year period preceding the reference year.
h    2015
i    Refers to foreign citizens.
j    Data as at the end of December.
k    Data revision.
l    2014
m    2009
n    Partial data.
o    Government only.
p    2004
q    Arrivals of non-resident tourists by air.