Percent of world oil reserves - Country rankings:
The average for 2016 was 1.03 percent.The highest value was in Venezuela: 18.51 percent and the lowest value was in Austria: 0 percent. Below is a chart for all countries where data are available for: Percent of world oil reserves.
Percent of world oil reserves, 2016
(percent, Source: The U.S. Energy Information Administration, TheGlobalEconomy.com)