| Country | Action | Action Date | Effective Date |
|---|
| ARMENIA | Ratification | 29/04/2005 | 29/04/2006 |
| AUSTRALIA | Ratification | 15/05/1987 | |
| AUSTRIA | Ratification | 03/06/1987 | |
| AZERBAIJAN | Ratification | 19/05/1992 | 19/05/1992 |
| BELARUS | Ratification | 12/10/1990 | 12/10/1991 |
| BELARUS | Declaration | 12/10/1990 | |
| BENIN | Ratification | 06/04/2000 | 06/04/2001 |
| BOLIVIA | Ratification | 14/11/1990 | 14/11/1991 |
| BOLIVIA | Declaration | 14/11/1990 | |
| BRAZIL | Ratification | 02/07/1990 | 02/07/1991 |
| CANADA | Ratification | 22/11/1995 | |
| COLOMBIA | Ratification | 23/03/1990 | 23/03/1991 |
| COSTA RICA | Ratification | 13/02/2001 | 13/02/2002 |
| CYPRUS | Ratification | 01/12/1987 | |
| CZECH REPUBLIC | Ratification | 01/01/1993 | 01/01/1993 |
| DENMARK | Ratification | 22/01/1988 | |
| EL SALVADOR | Ratification | 24/04/1987 | |
| FINLAND | Ratification | 27/04/1987 | |
| GERMANY | Ratification | 25/04/1991 | 25/04/1992 |
| GERMANY | Declaration | 25/04/1991 | |
| Gibraltar | Extension | 06/07/1988 | 07/07/1988 |
| GREECE | Ratification | 17/03/1993 | 17/03/1994 |
| GUATEMALA | Ratification | 07/04/1993 | 07/04/1994 |
| Hong Kong | Extension | 06/03/1992 | 06/03/1992 |
| HONG KONG SAR | App. with mods. | 08/04/2004 | 08/04/2004 |
| INDIA | Ratification | 01/04/1992 | 01/04/1993 |
| IRELAND, REPUBLIC OF | Ratification | 27/10/1995 | |
| Isle of Man | Extension | 25/05/1993 | 25/05/1993 |
| ITALY | Ratification | 08/11/1989 | 08/11/1990 |
| Jersey | Extension | 25/05/1988 | |
| KYRGYZSTAN | Ratification | 31/03/1992 | 31/03/1992 |
| LATVIA | Ratification | 10/06/1994 | 10/06/1995 |
| LITHUANIA | Ratification | 10/06/1999 | 10/06/2000 |
| MAURITIUS | Ratification | 14/06/1994 | 14/06/1995 |
| MEXICO | Ratification | 18/04/1988 | |
| NETHERLANDS THE | Ratification | 05/10/1990 | 05/10/1991 |
| NETHERLANDS THE | Declaration | 05/10/1990 | |
| NEW ZEALAND | Ratification | 06/11/2001 | 06/11/2002 |
| NORWAY | Ratification | 06/08/1987 | |
| POLAND | Ratification | 24/04/1991 | 24/04/1992 |
| PORTUGAL | Ratification | 08/12/1993 | 08/12/1994 |
| PORTUGAL | Declaration | 30/11/1999 | |
| RUSSIAN FEDERATION | Ratification | 27/08/1990 | 27/08/1991 |
| SAN MARINO | Ratification | 01/07/1988 | |
| SLOVAK REPUBLIC | Ratification | 01/01/1993 | 01/01/1993 |
| SPAIN | Ratification | 03/10/1989 | |
| SRI LANKA | Ratification | 01/04/1993 | 01/04/1994 |
| SWAZILAND | Ratification | 22/09/1992 | |
| SWEDEN | Ratification | 22/09/1986 | |
| SWEDEN | Declaration | 26/01/2006 | |
| SWITZERLAND | Ratification | 07/05/1987 | |
| TAJIKISTAN | Ratification | 26/11/1993 | 26/11/1993 |
| UKRAINE | Ratification | 15/08/1991 | 15/08/1992 |
| UNITED KINGDOM | Ratification | 27/05/1987 | |
| UNITED KINGDOM | Declaration | 06/03/1992 | 06/03/1992 |
| UNITED KINGDOM | Declaration | 25/05/1993 | 25/05/1993 |
| UNITED STATES OF AMERICA | Ratification | 11/06/1990 | 11/06/1991 |