| 2019 | 2020 | 2021 | 2022 | 2023 | Change 23/22 | % Change 23/22 | Avg. Gr. (%) | Mean | SD | Min | Max | CV | Share in 2023 (%) | |
| Algeria | 22674 | 13188 | 23356 | 32545 | 26115 | -6430 | -19.76 | -19.76 | 23576 | 6994 | 13188 | 32545 | 0.30 | 3.84 |
| Congo | 7072 | 3689 | 5785 | 8297 | 6811 | -1487 | -17.92 | -17.92 | 6331 | 1727 | 3689 | 8297 | 0.27 | 1.00 |
| Equatorial Guinea | 2703 | 1765 | 2366 | 3111 | 1745 | -1366 | -43.91 | -43.91 | 2338 | 594 | 1745 | 3111 | 0.25 | 0.26 |
| Gabon | 4767 | 2714 | 4641 | 6812 | 6107 | -706 | -10.36 | -10.36 | 5008 | 1575 | 2714 | 6812 | 0.31 | 0.90 |
| IR Iran | 19402 | 7914 | 25526 | 38985 | 41129 | 2144 | 5.50 | 5.50 | 26591 | 13844 | 7914 | 41129 | 0.52 | 6.05 |
| Iraq | 80028 | 44130 | 79789 | 121064 | 102574 | -18489 | -15.27 | -15.27 | 85517 | 28855 | 44130 | 121064 | 0.34 | 15.09 |
| Kuwait | 52432 | 35228 | 61703 | 94000 | 78061 | -15939 | -16.96 | -16.96 | 64285 | 22717 | 35228 | 94000 | 0.35 | 11.48 |
| Libya | 24197 | 5724 | 27485 | 33272 | 30689 | -2583 | -7.76 | -7.76 | 24273 | 10915 | 5724 | 33272 | 0.45 | 4.51 |
| Nigeria | 45128 | 27730 | 41378 | 53457 | 46298 | -7159 | -13.39 | -13.39 | 42798 | 9491 | 27730 | 53457 | 0.22 | 6.81 |
| Saudi Arabia | 200488 | 119359 | 202166 | 327007 | 248376 | -78631 | -24.05 | -24.05 | 219479 | 75963 | 119359 | 327007 | 0.35 | 36.54 |
| United Arab Emirates | 52417 | 31341 | 54595 | 94677 | 78161 | -16516 | -17.44 | -17.44 | 62238 | 24573 | 31341 | 94677 | 0.39 | 11.50 |
| Venezuela | 18335 | 5738 | 8816 | 15379 | 13682 | -1697 | -11.04 | -11.04 | 12390 | 5074 | 5738 | 18335 | 0.41 | 2.01 |
| Total OPEC | 529642 | 298520 | 537606 | 828605 | 679746 | -148859 | -17.97 | -17.97 | 574824 | 196967 | 298520 | 828605 | 0.34 | 100.00 |