a    2017
b    Consists of the population of Hong Kong Island, New Kowloon the new towns in New Territories and the marine areas.
c    2018
d    Including mining and quarrying.
e    Excluding hunting and forestry.
f    Data classified according to ISIC Rev. 4.
g    Includes waste management.
h    Excluding mining and quarrying.
i    Excluding waste management.
j    Estimate.
k    2016
l    Asia not elsewhere specified.
m    Data refers to a 5-year period preceding the reference year.
n    2015
o    Data as at the end of December.
p    Population aged 10 years and over.
q    Users in the last 12 months.
r    2004
s    2014