Brazil produced 1.018 billion barrels of oil in 2019, marking the first time the South American nation passed the billion-barrel mark for annual production, the national oil regulator said on Jan. 22.

In a statement, the regulator, known as the ANP, said 2019 output increased 7.78% over the previous year. Brazil produced 3.106 million barrels per day (MMbbl) of oil in December, up 0.52% from the previous month and up 15.44% from December 2018.

Brazil has been quickly ramping up its oil and natural gas production over the last year, as state-run oil firm Petrobras and foreign competitors put more production online in a prolific seabed formation known as the presalt.

In 2019, total oil production in the presalt area reached 633.98 MMbbl, ANP said, up 21.56% from 2018.

Total natural gas production reached 44.724 billion cubic meters, up 9.46% from 2018. In December, natural gas production rose 0.87% from the previous month and 21.19% from December 2018 to 137.8 million cubic meters per day.