| 2019 | 2020 | 2021 | 2022 | 2023 | Change 23/22 | % Change 23/22 | Avg. Gr. (%) | Mean | SD | Min | Max | CV | Share in 2023 (%) | |
| Algeria | 90.30 | 85.12 | 105.04 | 100.51 | 104.28 | 3.76 | 3.74 | 3.66 | 97.05 | 8.89 | 85.12 | 105.04 | 0.09 | 15.55 |
| Congo | 0.58 | 0.40 | 0.42 | 0.42 | 0.43 | 0.00 | 0.40 | -7.49 | 0.45 | 0.07 | 0.40 | 0.58 | 0.16 | 0.06 |
| Equatorial Guinea | 6.23 | 6.02 | 7.05 | 8.10 | 7.10 | -1.00 | -12.36 | 3.31 | 6.90 | 0.83 | 6.02 | 8.10 | 0.12 | 1.06 |
| Gabon | 0.46 | 0.50 | 0.45 | 0.46 | 0.46 | 0.00 | 0.00 | -0.05 | 0.47 | 0.02 | 0.45 | 0.50 | 0.04 | 0.07 |
| IR Iran | 241.73 | 249.63 | 257.12 | 262.26 | 275.00 | 12.74 | 4.86 | 3.28 | 257.15 | 12.64 | 241.73 | 275.00 | 0.05 | 41.00 |
| Iraq | 11.54 | 7.37 | 9.59 | 9.78 | 10.96 | 1.19 | 12.12 | -1.28 | 9.85 | 1.61 | 7.37 | 11.54 | 0.16 | 1.63 |
| Kuwait | 13.95 | 12.88 | 12.73 | 13.88 | 15.55 | 1.66 | 11.98 | 2.74 | 13.80 | 1.13 | 12.73 | 15.55 | 0.08 | 2.32 |
| Libya | 26.83 | 20.93 | 13.01 | 12.57 | 11.75 | -0.82 | -6.52 | -18.65 | 17.02 | 6.62 | 11.75 | 26.83 | 0.39 | 1.75 |
| Nigeria | 47.83 | 49.95 | 48.57 | 44.31 | 42.40 | -1.90 | -4.30 | -2.96 | 46.61 | 3.14 | 42.40 | 49.95 | 0.07 | 6.32 |
| Saudi Arabia | 117.00 | 119.00 | 120.48 | 122.89 | 123.53 | 0.64 | 0.52 | 1.37 | 120.58 | 2.71 | 117.00 | 123.53 | 0.02 | 18.42 |
| United Arab Emirates | 55.10 | 55.06 | 54.48 | 55.57 | 56.69 | 1.11 | 2.00 | 0.71 | 55.38 | 0.83 | 54.48 | 56.69 | 0.01 | 8.45 |
| Venezuela | 20.56 | 18.03 | 23.72 | 24.42 | 22.63 | -1.79 | -7.33 | 2.43 | 21.87 | 2.60 | 18.03 | 24.42 | 0.12 | 3.37 |
| Total OPEC | 632.12 | 624.90 | 652.66 | 655.19 | 670.78 | 15.58 | 2.38 | 1.49 | 647.13 | 18.53 | 624.90 | 670.78 | 0.03 | 100.00 |