a    Projected estimate (medium fertility variant).
b    Including Ă…land Islands.
c    2015
d    2017
e    2016
f    Data classified according to ISIC Rev. 4.
g    Estimate.
h    Calculated by the Statistics Division of the United Nations from national indices.
i    2014
j    Break in the time series.
k    Data refers to a 5-year period preceding the reference year.
l    Data as at the end of December.
m    2002
n    Population aged 16 to 74 years.
o    Population aged 16 to 89 years.
p    2004
q    Development Assistance Committee member (OECD).
r    Provisional data.