For the years 1971 to 1981 the data source is
World Bank.
For the years 1982 to 1988 the data sources are
World Bank
and
IEA (imports/exports).
For the year 1989 the data sources are
EIA
and
IEA (imports/exports).
For the years 1990 to 1999 the data source is
IEA.
For the years 2000 to 2003 the data source is
Ember.
For the year 2004 the data source is
IEA.
For the years 2005 to 2010 the data source is
Ember.
For the year 2011 the data source is
IEA.
For the years 2012 to 2023 the data source is
Ember.
For the year 2023/2024 the data source is
aggregated data from the last 12 months (2023-09 to 2024-08).
For the months 2023-09 to 2024-08 the data source is
Ember.