a    Data refer to 1 October.
b    2007
c    Major metropolitan areas.
d    2019
e    2018
f    At producers' prices.
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    Calculated by the UN Statistics Division from national indices.
m    2016
n    Data refers to a 5-year period preceding the reference year.
o    Refers to foreign citizens.
p    Data as at the end of December.
q    2017
r    2014
s    Data are as at 1 January of reporting year.
t    Population aged 6 years and over.
u    Break in the time series.
v    Data include Okinawa.
w    Excluding nationals residing abroad.
x    Development Assistance Committee member (OECD).