2) Daglig OPEC olieproduktionen, 2022-2024: 34-40 mio tønder
https://nyheder.tv2.dk/udland/2023-06-05-saudi-arabien-skaerer-i-olieproduktionen-for-at-styrke-prisen
https://www.statista.com/statistics/265205/oil-production-in-opec-countries-in-barrels-per-day

3) USA Strategic petroleum reserve (SPR): 714 million tønder

https://stillwaterassociates.com/just-how-much-reserve-does-the-spr-have-and-whats-it-for/
https://www.atlasobscura.com/places/bryan-mound-strategic-petroleum-reserve (underground salt caverns)

"Live" SPR-data: https://www.spr.doe.gov/dir/dir.html

4) Verden Oliereserver
https://www.opec.org/opec_web/en/data_graphs/330.htm

5) Why Venezuela Is So Poor Despite Having So Much Oil (Dutch disease, corruption)
https://www.youtube.com/watch?v=iieBGozeODE