| Rank | Score | | Item
 |
| 1. | 42 |  | Convention on the law of treaties |
| 2. | 36 | | Convention relating to the status of refugees |
| 3. | 35 | | International convention on the elimination of all forms of racial discrimination |
| 4. | 34 | | Convention on biological diversity |
| 5. | 33 | | Convention on the prevention and punishment of the crime of genocide |
| 6. | 27 | | Universal copyright convention |
| 7. | 27 | | United Nations framework convention on climate change |
| 8. | 25 | | Single convention on narcotic drugs |
| 9. | 25 | | International convention against the taking of hostages |
| 10. | 24 | | Convention for the suppression of unlawful acts against the safety of civil aviation |
| 11. | 24 | | Treaty of peace with Japan |
| 12. | 21 | | United Nations convention against illicit traffic in narcotic drugs and psychotropic substances |
