a    Projected estimate (medium fertility variant).
b    Excluding inland water.
c    2015.
d    2016.
e    Data classified according to ISIC Rev. 4.
f    Estimate.
g    2014.
h    Excluding water and waste management.
i    Other Europe, not elsewhere specified.
j    Data refers to a 5-year period preceding the reference year.
k    Data as at the end of December.
l    2009.
m    2013.
n    Includes inactive subscriptions.
o    Population aged 16 to 74 years.
p    Users in the last 3 months.
q    2004.
r    Break in the time series.
s    Development Assistance Committee member (OECD)
t    Provisional data.