Global oil and gas discoveries in 2019 of 12.2 billion barrels of oil equivalent (boe) represents the highest volumes since 2015, according to Rystad Energy’s data on Thursday. 

Headquartered in Norway, Rystad Energy is an independent energy research and business intelligence company providing data, tools, analytics and consultancy services to the global energy industry.

Ongoing investments of U.S. company ExxonMobil in Guyana with additional four new discoveries boosted last year’s numbers, Rystad said in a statement.

According to the estimations, the discoveries in Guyana hold cumulative recoverable resources of around 1.8 billion boe.

“ExxonMobil can be declared explorer of

Read more: Global oil & gas discoveries reach 4-year high in 2019