a    Projected estimate (medium fertility variant).
b    2015
c    2017
d    2016
e    Data classified according to ISIC Rev. 4.
f    Estimate.
g    Calculated by the Statistics Division of the United Nations from national indices.
h    Twelve months ending 31 March of the year stated.
i    2014
j    Data refers to a 5-year period preceding the reference year.
k    Data as at the end of December.
l    2002
m    Data refer to offences, not victims, of intentional homicide.
n    2009
o    2013
p    2004
q    Development Assistance Committee member (OECD).
r    Provisional data.