a    Including Canary Islands, Ceuta and Melilla.
b    Projected estimate (medium fertility variant).
c    2015
d    2017
e    2016
f    Data classified according to ISIC Rev. 4.
g    Estimate.
h    Break in the time series.
i    Calculated by the Statistics Division of the United Nations from national indices.
j    Excluding water and waste management.
k    2014
l    Data refers to a 5-year period preceding the reference year.
m    Data as at the end of December.
n    Users in the last 12 months.
o    Population aged 16 to 74 years.
p    Population aged 10 years and over.
q    2004
r    Data include the Canary Islands.
s    Development Assistance Committee member (OECD).
t    Provisional data.