a    Projected estimate (medium fertility variant).
b    Data refer to 1 October 2007.
c    2019
d    Major metropolitan areas.
e    2020
f    At producers' prices.
g    Estimate.
h    Calculated by the UN Statistics Division from national indices.
i    Data refers to a 5-year period preceding the reference year.
j    Refers to foreign citizens.
k    Data as at the end of December.
l    2018
m    2014
n    2017
o    Data are as at 1 January of reporting year.
p    Population aged 6 years and over.
q    Break in the time series.
r    Data include Okinawa.
s    Excluding nationals residing abroad.
t    Development Assistance Committee member (OECD).