Participant	Action	Date of Notification/Deposit	Date of Effect
Albania	Accession	13/05/2009	01/06/2010
Argentina	Accession	19/07/1983	01/01/1988
Armenia	Accession	02/12/2008	01/01/2010
Australia	Accession	17/03/1988	01/04/1989
Austria	Signature	11/04/1980
Austria	Ratification	29/12/1987	01/01/1989
Azerbaijan	Accession	03/05/2016	01/06/2017
Bahrain	Accession	25/09/2013	01/10/2014
Belgium	Accession	31/10/1996	01/11/1997
Benin	Accession	29/07/2011	01/08/2012
Bosnia and Herzegovina	Succession	12/01/1994	06/03/1992
Brazil	Accession	04/03/2013	01/04/2014
Bulgaria	Accession	09/07/1990	01/08/1991
Burundi	Accession	04/09/1998	01/10/1999
Byelorussian Soviet Socialist Republic	Accession	09/10/1989	01/11/1990
Cameroon	Accession	11/10/2017	01/11/2018
Canada	Declaration	18/06/2003
Canada	Territorial application	29/06/1992	01/01/1993
Canada	Withdrawal of declaration	31/07/1992	01/02/1993
Canada	Territorial application	09/04/1992	01/05/1992
Canada	Accession	23/04/1991	01/05/1992
Chile	Signature	11/04/1980
Chile	Ratification	07/02/1990	01/03/1991
China	Signature	30/09/1981
China	Partial withdrawal	16/01/2013
China	Approval	11/12/1986	01/01/1988
Colombia	Accession	10/07/2001	01/08/2002
Congo	Accession	11/06/2014	01/07/2015
Cook Islands	Territorial exclusion	22/09/1994	01/10/1995
Costa Rica	Accession	12/07/2017	01/08/2018
Croatia	Succession	08/06/1998	08/10/1991
Cuba	Accession	02/11/1994	01/12/1995
Cyprus	Accession	07/03/2005	01/04/2006
Czech Republic	Withdrawal of reservation	22/11/2017
Czech Republic	Succession	30/09/1993	01/01/1993
Czechoslovakia	Signature	01/09/1981
Czechoslovakia	Ratification	05/03/1990	01/04/1991
Democratic People's Republic of Korea	Accession	27/03/2019	01/04/2020
Denmark	Declaration	02/07/2012
Denmark	Signature	26/05/1981
Denmark	Withdrawal of declaration	02/07/2012
Denmark	Ratification	14/02/1989	01/03/1990
Dominican Republic	Accession	07/06/2010	01/07/2011
Ecuador	Accession	27/01/1992	01/02/1993
Egypt	Accession	06/12/1982	01/01/1988
El Salvador	Accession	27/11/2006	01/12/2007
Estonia	Withdrawal of declaration	09/03/2004
Estonia	Accession	20/09/1993	01/10/1994
Federal Republic of Germany	Signature	26/05/1981
Federal Republic of Germany	Ratification	21/12/1989	01/01/1991
Fiji	Accession	07/06/2017	01/07/2018
Finland	Signature	26/05/1981
Finland	Ratification	15/12/1987	01/01/1989
Finland	Declaration	28/11/2011	28/11/2011
Finland	Withdrawal of declaration	28/11/2011	28/11/2011
France	Signature	27/08/1981
France	Approval	06/08/1982	01/01/1988
Gabon	Accession	15/12/2004	01/01/2006
Georgia	Accession	16/08/1994	01/09/1995
German Democratic Republic	Signature	13/08/1981
German Democratic Republic	Ratification	23/02/1989	01/03/1990
Ghana	Signature	11/04/1980
Greece	Accession	12/01/1998
Guatemala	Accession	11/12/2019	01/01/2021
Guinea	Accession	23/01/1991	01/02/1992
Guyana	Accession	25/09/2014	01/10/2015
Honduras	Accession	10/10/2002	01/11/2003
Hungary	Signature	11/04/1980
Hungary	Withdrawal of declaration	06/07/2015
Hungary	Ratification	16/06/1983	01/01/1988
Iceland	Declaration	12/03/2003
Iceland	Accession	10/05/2001	01/06/2002
Iraq	Accession	05/03/1990	01/04/1991
Israel	Accession	22/01/2002	01/02/2003
Italy	Signature	30/09/1981
Italy	Ratification	11/12/1986	01/01/1988
Japan	Accession	01/07/2008	01/08/2009
Kyrgyzstan	Accession	11/05/1999	01/06/2000
Lao People's Democratic Republic	Accession	24/09/2019	01/10/2020
Latvia	Withdrawal of declaration	13/11/2012
Latvia	Accession	31/07/1997	01/08/1998
Lebanon	Accession	21/11/2008	01/12/2009
Lesotho	Signature	18/06/1981
Lesotho	Ratification	18/06/1981	01/01/1988
Liberia	Accession	16/09/2005	01/10/2006
Liechtenstein	Accession	30/04/2019	01/05/2020
Lithuania	Withdrawal of declaration	01/11/2013
Lithuania	Accession	18/01/1995	01/02/1996
Luxembourg	Accession	30/01/1997	01/02/1998
Madagascar	Accession	24/09/2014	01/10/2015
Manitoba	Territorial application	23/04/1991	01/05/1992
Mauritania	Accession	20/08/1999	01/09/2000
Mexico	Accession	29/12/1987	01/01/1989
Mongolia	Accession	31/12/1997	01/01/1999
Montenegro	Succession	23/10/2006	03/06/2006
Netherlands	Signature	29/05/1981
Netherlands	Acceptance	13/12/1990	01/01/1992
New Brunswick	Territorial application	23/04/1991	01/05/1992
New Zealand	Accession	22/09/1994	01/10/1995
Newfoundland	Territorial application	23/04/1991	01/05/1992
Niue	Territorial exclusion	22/09/1994	01/10/1995
Norway	Withdrawal of declaration	14/04/2014
Norway	Signature	26/05/1981
Norway	Declaration	14/04/2014
Norway	Ratification	20/07/1988	01/08/1989
Ontario	Territorial application	23/04/1991	01/05/1992
Paraguay	Accession	13/01/2006	01/02/2007
Peru	Accession	25/03/1999	01/04/2000
Poland	Signature	28/09/1981
Poland	Ratification	19/05/1995	01/06/1996
Portugal	Accession	23/09/2020	01/10/2021
Prince Edward Island	Territorial application	23/04/1991	01/05/1992
Province of Alberta	Territorial application	23/04/1991	01/05/1992
Province of Nova Scotia	Territorial application	23/04/1991	01/05/1992
Republic of Korea	Accession	17/02/2004	01/03/2005
Republic of Moldova	Accession	13/10/1994	01/11/1995
Romania	Accession	22/05/1991	01/06/1992
San Marino	Accession	22/02/2012	01/03/2013
Singapore	Signature	11/04/1980
Singapore	Ratification	16/02/1995	01/03/1996
Slovakia	Succession	28/05/1993	01/01/1993
Slovenia	Succession	07/01/1994	25/06/1991
Spain	Accession	24/07/1990	01/08/1991
St. Vincent and the Grenadines	Accession	12/09/2000	01/10/2001
State of Palestine	Accession	29/12/2017	01/01/2019
Sweden	Signature	26/05/1981
Sweden	Ratification	15/12/1987	01/01/1989
Sweden	Withdrawal of declaration	25/05/2012	25/05/2012
Sweden	Declaration	25/05/2012	25/05/2012
Switzerland	Accession	21/02/1990	01/03/1991
Syrian Arab Republic	Accession	19/10/1982	01/01/1988
The former Yugoslav Republic of Macedonia	Succession	22/11/2006	17/11/1991
Tokelau Islands	Territorial exclusion	22/09/1994	01/10/1995
Turkey	Accession	07/07/2010	01/08/2011
Uganda	Accession	12/02/1992	01/03/1993
Ukrainian Soviet Socialist Republic	Accession	03/01/1990	01/02/1991
Union of Soviet Socialist Republics	Accession	16/08/1990	01/09/1991
United States of America	Signature	31/08/1981
United States of America	Ratification	11/12/1986	01/01/1988
Uruguay	Accession	25/01/1999	01/02/2000
Uzbekistan	Accession	27/11/1996	01/12/1997
Venezuela	Signature	28/09/1981
Viet Nam	Accession	18/12/2015	01/01/2017
Yugoslavia (Federal Republic of)	Succession	12/03/2001	27/04/1992
Yugoslavia (Socialist Federal Republic of)	Signature	11/04/1980
Yugoslavia (Socialist Federal Republic of)	Ratification	27/03/1985	01/01/1988
Zambia	Accession	06/06/1986	01/01/1988