For the years 1980 to 1985 the data sources are
EIA and
IEA (imports/exports) .
For the years 1986 to 1989 the data source is
EIA .
For the years 1990 to 1996 the data source is
IEA .
For the years 1997 to 1999 the data source is
EIA .
For the years 2000 to 2024 the data source is
Ember .
For the months 2024-02 to 2025-01 the data source is
Ember .