From the 2018 crude oil market analysis by Beroe, the total reserves of crude oil over the world were at 1729 thousand million barrels, marking an increase of 0.1 percent from the total reserves in 2016. About 85.7 percent of the contribution to the global reserves came from non-OECD countries while 14.3 percent of the total proven reserves were contributed by the OECD countries.