a    Projected estimate (medium fertility variant).
b    Excluding inland water.
c    2015
d    2017
e    2016
f    Data classified according to ISIC Rev. 4.
g    Estimate.
h    Excluding water and waste management.
i    2014
j    Europe not elsewhere specified.
k    Data refers to a 5-year period preceding the reference year.
l    Data as at the end of December.
m    2009
n    Population aged 16 to 74 years.
o    Users in the last 3 months.
p    2004
q    Non-resident tourists staying in commercial accommodation only (representing approximately 25% of all tourists).
r    Development Assistance Committee member (OECD).
s    Provisional data.