| Party | Signature | Provisional application  | 
                  RatificationS=Signature without reservation or requirement of ratification R=Ratification, Acceptance, Approval or Notification A=Accession Su=Succession NK=Not Known | Entry into force | Renunciation | Termination | 
|---|---|---|---|---|---|---|
| Antigua and Barbuda | 08-06-1988 | |||||
| Argentina | 08-06-1988 | |||||
| Barbados | 08-06-1988 | |||||
| Brazil | 08-06-1988 | |||||
| Canada | 08-06-1988 | 20-02-1991 (R) | 20-02-1991 | |||
| Chile | 08-06-1988 | |||||
| Colombia | 08-06-1988 | |||||
| Costa Rica | 08-06-1988 | |||||
| Cuba | 08-06-1988 | |||||
| Denmark | 13-06-1990 (A) | 01-07-1990 | ||||
| France | 08-06-1988 | 13-04-1992 (R) | 13-04-1992 | |||
| Haïti | 08-06-1988 | |||||
| Honduras | 08-06-1988 | |||||
| Mexico | 08-06-1988 | |||||
| Netherlands, the Kingdom of the | 23-10-1992 (A) | 23-10-1992 | ||||
| Paraguay | 08-06-1988 | |||||
| Suriname | 08-06-1988 | |||||
| Trinidad and Tobago | 08-06-1988 | |||||
| United Kingdom | 08-06-1988 | |||||
| United States of America | 08-06-1988 | |||||
| Uruguay | 08-06-1988 | |||||
| Venezuela | 08-06-1988 |