a    2017
b    2019
c    2018
d    Estimate.
e    2016
f    Data refers to a 5-year period preceding the reference year.
g    Including refugees.
h    Data as at the end of December.
i    2009
j    2014
k    2012
l    Data are as at 1 January of reporting year.
m    Break in the time series.
n    2013
o    Including Eritrea.
p    Including nationals residing abroad.
q    Arrivals through all ports of entry.