| Date d'adhésion | Membres | % Correct |
|---|---|---|
| 1995 | Viet Nam | 100%
|
| 1997 | Laos | 96%
|
| 1967 | Thaïlande | 96%
|
| 1967 | Indonésie | 93%
|
| 1997 | Myanmar | 93%
|
| 1999 | Cambodge | 89%
|
| 1967 | Malaisie | 89%
|
| 1967 | Philippines | 89%
|
| 1967 | Singapour | 89%
|
| 1984 | Bruneï | 81%
|