a    Projected estimate (medium fertility variant).
b    2015.
c    2016.
d    Data classified according to ISIC Rev. 4.
e    Estimate.
f    Annual average is weighted mean of monthly data.
g    Series linked to former series.
h    2014.
i    Excluding water and waste management.
j    Data refers to a 5-year period preceding the reference year.
k    Data as at the end of December.
l    2013.
m    2002.
n    Population aged 16 to 74 years.
o    Population aged 15 to 74 years.
p    2004.