| 2020 | 2021 | 2022 | 2023 | 2024 | Change 24/23 | % Change 24/23 | Avg. Gr. (%) | Mean | SD | Min | Max | CV | Share in 2024 (%) | |
| Algeria | 44.24 | 45.02 | 45.80 | 46.34 | 46.70 | 0.36 | 0.77 | 1.36 | 45.62 | 1.00 | 44.24 | 46.70 | 0.02 | 9.18 |
| Congo | 5.70 | 5.84 | 5.97 | 6.14 | 6.31 | 0.17 | 2.79 | 2.56 | 5.99 | 0.24 | 5.70 | 6.31 | 0.04 | 1.24 |
| Equatorial Guinea | 1.41 | 1.45 | 1.50 | 1.54 | 1.59 | 0.05 | 2.98 | 3.12 | 1.50 | 0.07 | 1.41 | 1.59 | 0.05 | 0.31 |
| Gabon | 2.11 | 2.14 | 2.16 | 2.21 | 2.26 | 0.05 | 2.22 | 1.73 | 2.17 | 0.06 | 2.11 | 2.26 | 0.03 | 0.44 |
| IR Iran | 84.04 | 84.06 | 84.90 | 85.76 | 86.63 | 0.87 | 1.01 | 0.76 | 85.08 | 1.12 | 84.04 | 86.63 | 0.01 | 17.02 |
| Iraq | 40.15 | 41.19 | 42.25 | 43.32 | 46.12 | 2.79 | 6.45 | 3.53 | 42.61 | 2.29 | 40.15 | 46.12 | 0.05 | 9.06 |
| Kuwait | 4.67 | 4.63 | 4.74 | 4.86 | 4.99 | 0.13 | 2.64 | 1.66 | 4.78 | 0.15 | 4.63 | 4.99 | 0.03 | 0.98 |
| Libya | 6.64 | 6.71 | 6.78 | 6.85 | 6.91 | 0.07 | 0.99 | 1.00 | 6.78 | 0.11 | 6.64 | 6.91 | 0.02 | 1.36 |
| Nigeria | 213.40 | 218.40 | 221.60 | 222.18 | 227.82 | 5.64 | 2.54 | 1.65 | 220.68 | 5.30 | 213.40 | 227.82 | 0.02 | 44.77 |
| Saudi Arabia | 31.55 | 30.78 | 32.18 | 33.70 | 35.30 | 1.60 | 4.74 | 2.85 | 32.70 | 1.80 | 30.78 | 35.30 | 0.06 | 6.94 |
| United Arab Emirates | 9.45 | 9.79 | 10.24 | 10.64 | 11.03 | 0.39 | 3.62 | 3.94 | 10.23 | 0.63 | 9.45 | 11.03 | 0.06 | 2.17 |
| Venezuela | 32.61 | 32.99 | 33.36 | 33.73 | 33.24 | -0.49 | -1.44 | 0.48 | 33.18 | 0.42 | 32.61 | 33.73 | 0.01 | 6.53 |
| Total OPEC | 475.97 | 482.99 | 491.47 | 497.28 | 508.89 | 11.62 | 2.34 | 1.69 | 491.32 | 12.74 | 475.97 | 508.89 | 0.03 | 100.00 |