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    Break in the time series.
i    Data refers to a 5-year period preceding the reference year.
j    Data as at the end of December.
k    2013.
l    Provisional data.
m    Population aged 16 to 74 years.
n    2004.