Oil reserves, billion barrels, 2019 - Country rankings:
The average for 2019 was 8.62 billion barrels.The highest value was in Venezuela: 302.81 billion barrels and the lowest value was in Afghanistan: 0 billion barrels. Below is a chart for all countries where data are available.
Measure: billion barrels; Source: The U.S. Energy Information Administration
* indicates monthly or quarterly data series