For the years 1971 to 1988 the data source is
World Bank.
For the year 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 2007 the data source is
Ember.
For the years 2008 to 2013 the data source is
IEA.
For the year 2014 the data source is
Ember.
For the year 2015 the data source is
IEA.
For the years 2016 to 2023 the data source is
Ember.
For the year 2023/2024 the data source is
aggregated data from the last 12 months (2023-11 to 2024-10).
For the months 2023-11 to 2024-10 the data source is
Ember.