Footnotes  
a    Projected estimate (medium fertility variant).
b    2015
c    2017
d    2016
e    Data classified according to ISIC Rev. 4.
f    Estimate.
g    Calculated by the Statistics Division of the United Nations from national indices.
h    Excluding water and waste management.
i    2014
j    Data refers to a 5-year period preceding the reference year.
k    Data as at the end of December.
l    Population aged 16 to 74 years.
m    Users in the last 3 months.
n    2004
o    Including tourists from Northern Ireland.
p    Break in the time series.
q    Development Assistance Committee member (OECD).
r    Provisional data.