a    Projected estimate (medium fertility variant).
b    2015
c    2017
d    Population aged 15 to 64 years.
e    Excluding the institutional population.
f    2012
g    Break in the time series.
h    2013
i    Calculated by the Statistics Division of the United Nations from national indices.
j    2016
k    Data refers to a 5-year period preceding the reference year.
l    2009
m    2004
n    Estimate.
o    2014