| OPEC (1960) | OAPEC (1968) | LAS (1945) | CAEU (1964) | GCC (1981) | AMU (1989) | GAFTA (1997) | AgaAg (2004) | MENA (2007) |
| Algeria | Algeria | Algeria | Algeria |
| Algeria |
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| Algeria |
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| Bahrain | Bahrain | Bahrain | Bahrain |
| Bahrain |
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| Comoros |
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| Djibouti |
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| Djibouti |
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| Egypt | Egypt | Egypt |
|
| Egypt | Egypt | Egypt |
| Iraq (FM) | Iraq | Iraq | Iraq |
|
| Iraq |
| Iraq |
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| Jordan | Jordan |
|
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| Jordan | Jordan |
| Kuwait (FM) | Kuwait (FM) | Kuwait | Kuwait | Kuwait |
| Kuwait |
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| Lebanon | Lebanon |
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| Lebanon |
| Lebanon |
| Libya | Libya (FM) | Libya | Libya |
| Libya | Libya |
| Libya |
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| Mauritania |
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| Mauritania |
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| Morocco | Morocco |
| Morocco | Morocco | Morocco | Morocco |
|
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| Oman | Oman | Oman |
| Oman |
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| Palestine | Palestine |
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| West Bank and Gaza |
| Qatar | Qatar | Qatar | Qatar | Qatar |
| Qatar |
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| Saudi Arabia (FM) | Saudi Arabia (FM) | Saudi Arabia | Saudi Arabia | Saudi Arabia |
| Saudi Arabia |
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| Somalia |
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| Sudan | Sudan |
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| Sudan |
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| Syria | Syria | Syria |
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| Syria |
| Syria |
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| Tunisia | Tunisia | Tunisia |
| Tunisia | Tunisia | Tunisia | Tunisia |
| United Arab Emirates | United Arab Emirates | United Arab Emirates | United Arab Emirates | United Arab Emirates |
| United Arab Emirates |
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| Yemen | Yemen |
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| Yemen |
| 7 | 11 | 22 | 18 | 6 | 5 | 14 | 4 | 14 |