a    Projected estimate (medium fertility variant).
b    2015.
c    2016.
d    Data classified according to ISIC Rev. 4.
e    Estimate.
f    2014.
g    Excluding water and waste management.
h    Data refers to a 5-year period preceding the reference year.
i    Data as at the end of December.
j    Includes inactive subscriptions.
k    Excludes data-only subscriptions.
l    Break in the time series.
m    Data refers to active subscriptions only.
n    Population aged 16 to 74 years.
o    2004.
p    Development Assistance Committee member (OECD)
q    Provisional data.