a    2017
b    2018
c    Estimate.
d    Provisional data.
e    Break in the time series.
f    2016
g    Data classified according to ISIC Rev. 3.
h    Data refer to fiscal years ending 30 June.
i    2013
j    Data refers to a 5-year period preceding the reference year.
k    2015
l    Including refugees.
m    Data as at the end of December.
n    2009
o    2002
p    2014
q    Partial data.
r    2004
s    Including nationals residing abroad.
t    Arrivals through all ports of entry.