For the years 1976 to 1984 the data sources are
World Bank
and
IEA (imports/exports).
For the years 1992 to 2017 the data source is
IEA.
For the years 2018 to 2019 the data sources are
IEA
and
IEA (imports/exports).
For the year 2023/2024 the data source is
aggregated data from the last 12 months (2023-07 to 2024-06).
For the months 2023-07 to 2024-06 the data source is
IEA.