a    Projected estimate (medium fertility variant).
b    2015.
c    2016.
d    Estimate.
e    2014.
f    Data refers to a 5-year period preceding the reference year.
g    Data as at the end of December.
h    Data revision.
i    Government expenditures include external assistance (external budget).
j    Non-profit institutions (such as NGOs) serving households are accounted for in ´external assistance´ and recorded under government expenditure. GDP includes both licit and illicit GDPs (for example, opium).
k    2001.
l    2004.
m    2009.
n    2012.
o    Data refers to active subscriptions only.
p    Break in the time series.