| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Signature | 24/06/1974 | |
| AFGHANISTAN | Ratification | 16/05/1979 | 16/05/1980 |
| Aruba | Extension | 18/02/1986 | 18/02/1986 |
| AZERBAIJAN | Ratification | 11/03/1993 | 11/03/1994 |
| BELGIUM | Ratification | 12/01/1993 | 12/01/1994 |
| BELIZE | Ratification | 22/06/1999 | 22/06/2000 |
| Berlin West | Extension | 30/11/1976 | |
| Bermuda | Decision Resvd. | 05/02/1980 | |
| BOSNIA AND HERZEGOVINA | Ratification | 02/06/1993 | 02/06/1993 |
| BRAZIL | Ratification | 16/04/1992 | 16/04/1993 |
| British Virgin Islands | Decision Resvd. | 24/08/1977 | |
| Brunei | Decision Resvd. | 08/09/1976 | |
| CHILE | Ratification | 13/09/1999 | 13/09/2000 |
| CUBA | Signature | 24/06/1974 | |
| CUBA | Ratification | 30/12/1975 | 30/12/1976 |
| CZECH REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 24/06/1974 | |
| CZECHOSLOVAKIA | Ratification | 24/05/1976 | 24/05/1977 |
| Falkland Islands | Decision Resvd. | 04/11/1976 | |
| FINLAND | Ratification | 24/02/1992 | 24/02/1993 |
| FRANCE | Signature | 24/06/1974 | |
| FRANCE | Ratification | 20/10/1975 | 20/10/1976 |
| GERMAN DEMOCRATIC REPUBLIC | Signature | 24/06/1974 | |
| GERMAN DEMOCRATIC REPUBLIC | Ratification | 14/07/1977 | 14/07/1978 |
| GERMANY FEDERAL REPUBLIC | Signature | 24/06/1974 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 30/11/1976 | 30/11/1977 |
| Gibraltar | Decision Resvd. | 30/03/1977 | |
| Gilbert Islands | Decision Resvd. | 30/03/1977 | |
| GUINEA | Signature | 24/06/1974 | |
| GUINEA | Ratification | 20/04/1976 | 20/04/1977 |
| GUYANA | Signature | 24/06/1974 | |
| GUYANA | Ratification | 10/01/1983 | 10/01/1984 |
| Hong Kong | Decision Resvd. | 08/09/1976 | |
| HUNGARY | Signature | 24/06/1974 | |
| HUNGARY | Ratification | 10/06/1975 | 10/06/1976 |
| IRAQ | Signature | 24/06/1974 | |
| IRAQ | Ratification | 09/05/1978 | 09/05/1979 |
| Jersey | Extension | 21/12/1977 | 21/12/1977 |
| KENYA | Signature | 24/06/1974 | |
| KENYA | Ratification | 09/04/1979 | 09/04/1980 |
| MEXICO | Signature | 24/06/1974 | |
| MEXICO | Ratification | 17/02/1977 | 17/02/1978 |
| Montserrat | Decision Resvd. | 03/08/1979 | |
| NETHERLANDS THE | Signature | 24/06/1974 | |
| NETHERLANDS THE | Ratification | 14/09/1976 | 17/04/1977 |
| NICARAGUA | Signature | 24/06/1974 | |
| NICARAGUA | Ratification | 01/10/1981 | 01/10/1982 |
| POLAND | Signature | 24/06/1974 | |
| POLAND | Ratification | 23/04/1979 | 23/04/1980 |
| SAN MARINO | Signature | 24/06/1974 | |
| SAN MARINO | Ratification | 19/04/1988 | 19/04/1989 |
| SLOVAK REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| SLOVENIA | Ratification | 09/06/1992 | 09/06/1992 |
| Solomon Islands | Decision Resvd. | 08/09/1976 | |
| SPAIN | Signature | 24/06/1974 | |
| SPAIN | Ratification | 18/09/1978 | 18/09/1979 |
| St Christopher, Nevis and Anguilla | Extension | 19/01/1977 | |
| St Helena | Decision Resvd. | 21/08/1977 | |
| SWEDEN | Signature | 24/06/1974 | |
| SWEDEN | Ratification | 23/09/1975 | 23/09/1976 |
| TANZANIA | Signature | 24/06/1974 | |
| TANZANIA | Ratification | 30/05/1983 | 30/05/1984 |
| UKRAINE | Ratification | 07/03/2003 | 07/03/2004 |
| UNITED KINGDOM | Ratification | 04/12/1975 | |
| UNITED KINGDOM | Ratification | 04/12/1975 | 04/12/1976 |
| VENEZUELA | Signature | 24/06/1974 | |
| VENEZUELA | Ratification | 06/09/1983 | 06/09/1984 |
| YUGOSLAVIA | Signature | 24/06/1974 | |
| YUGOSLAVIA | Ratification | 06/12/1983 | 06/12/1984 |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Ratification | 24/11/2000 | 24/11/2000 |
| ZIMBABWE | Ratification | 27/08/1998 | 27/08/1999 |