For the years 1975 to 1986 the data source is
World Bank.
For the years 1987 to 1989 the data sources are
World Bank
and
IEA (imports/exports).
For the years 1990 to 1999 the data source is
IEA.
For the years 2000 to 2016 the data source is
Ember.
For the year 2017 the data source is
IEA.
For the years 2018 to 2024 the data source is
Ember.
For the months 2024-03 to 2024-12 the data source is
IEA.
For the months 2025-01 to 2025-02 the data source is
Ember.