a    Including Christmas Island, Cocos (Keeling) Islands and Norfolk Island.
b    Including Norfolk Island.
c    2017
d    Refers to Significant Urban Areas as of 2001.
e    2019
f    2018
g    Data classified according to ISIC Rev. 4.
h    Excludes publishing activities. Includes irrigation and canals.
i    Excludes repair of personal and household goods.
j    Excludes computer and related activities and radio/TV activities.
k    Estimate.
l    Break in the time series.
m    Calculated by the UN Statistics Division from national indices.
n    Weighted average of index values computed for the 8 capital cities.
o    2016
p    Imports FOB.
q    Data refers to a 5-year period preceding the reference year.
r    Data as at the end of December.
s    Asylum-seekers are based on the number of applications lodged for protection visas.
t    Data are as at 1 January of reporting year.
u    Population aged 15 years and over.
v    Accessed the internet for personal use in a typical week.
w    Excluding overseas territories.
x    Excluding nationals residing abroad and crew members.
y    Development Assistance Committee member (OECD).