a    Projected estimate (medium fertility variant).
b    2019
c    Refers to the municipality of Phnom Penh including suburban areas.
d    2020
e    Estimate.
f    Phnom Penh
g    2018
h    Data refers to a 5-year period preceding the reference year.
i    Including refugees.
j    Data as at the end of December.
k    Data refer to fiscal years beginning 1 July.
l    2014
m    2008
n    2011
o    Data are as at 1 January of reporting year.
p    Break in the time series.
q    Arrivals by all means of transport.