- Estimated additional > Reserves per 1000: . Figures expressed per thousand population for the same year.
- Production > Per capita: Per capita figures expressed per 1 million population.
- Production per million: . Figures expressed per million population for the same year.
- Reasonably assured > Reserves > Per capita: Per capita figures expressed per 1,000 population.
SOURCES: Source: Energy Statistics Database | United Nations Statistics Division; Source: Energy Statistics Database | United Nations Statistics Division. Population figures from World Bank: (1) United Nations Population Division. World Population Prospects, (2) United Nations Statistical Division. Population and Vital Statistics Report (various years), (3) Census reports and other statistical publications from national statistical offices, (4) Eurostat: Demographic Statistics, (5) Secretariat of the Pacific Community: Statistics and Demography Programme, and (6) U.S. Census Bureau: International Database.