Footnotes  
a    2017
b    Estimate.
c    Provisional data.
d    2015
e    2018
f    Data refers to a 5-year period preceding the reference year.
g    Including refugees.
h    Data as at the end of December.
i    Including South Sudan.
j    2016
k    2004
l    2008
m    2009
n    Overestimated or based on overestimated data.
o    2014
p    Including nationals residing abroad.