Ratifying countries
- 1966 - Honduras
- 1967 - Liberia
- 1968 - Costa Rica
- 1969 - Syria
- 1969 - Cyprus
- 1969 - Ecuador
- 1969 - Tunisia
- 1970 - Bulgaria
- 1970 - Libya
- 1970 - Uruguay
- 1971 - Madagascar
- 1971 - Sweden
- 1971 - Iraq
- 1972 - Lebanon
- 1972 - Norway
- 1972 - Chile
- 1972 - Denmark
- 1973 - Barbados
- 1973 - Russia
- 1973 - Mauritius
- 1973 - Germany
- 1973 - Belarus
- 1973 - Ukraine
- 1974 - Romania
- 1974 - Hungary
- 1974 - Mongolia
- 1974 - Mali
- 1975 - Iran
- 1975 - Jamaica
- 1975 - Jordan
- 1975 - Finland
- 1975 - Rwanda
- 1976 - Democratic Republic of the Congo
- 1976 - Tanzania
- 1976 - United Kingdom
- 1976 - Canada
- 1976 - Suriname
- 1977 - Poland
- 1977 - Panama
- 1977 - Spain
- 1977 - Guyana
- 1978 - Guinea
- 1978 - Peru
- 1978 - Kenya
- 1978 - Venezuela
- 1978 - Italy
- 1978 - Austria
- 1978 - Netherlands
- 1978 - New Zealand
- 1978 - Portugal
- 1978 - Senegal
- 1978 - Trinidad and Tobago
- 1978 - Dominican Republic
- 1979 - India
- 1979 - Morocco
- 1979 - El Salvador
- 1979 - Japan
- 1979 - Gambia
- 1980 - France
- 1980 - Australia
- 1980 - Sri Lanka
- 1980 - Nicaragua
- 1981 - Saint Vincent and the Grenadines
- 1981 - Saint Vincent and the Grenadines
- 1981 - Central African Republic
- 1981 - Mexico
- 1981 - North Korea
- 1982 - Egypt
- 1982 - Bolivia
- 1983 - Republic of the Congo
- 1983 - Belgium
- 1983 - Togo
- 1983 - Luxembourg
- 1983 - Gabon
- 1984 - Cameroon
- 1984 - Togo
- 1984 - Zambia
- 1984 - Vietnam
- 1985 - San Marino
- 1986 - Philippines
- 1986 - Sudan
- 1986 - Niger
- 1986 - Argentina
- 1987 - Yemen
- 1987 - Equatorial Guinea
- 1989 - Ireland
- 1989 - Algeria
- 1989 - Iceland
- 1990 - Burundi
- 1990 - Malta
- 1990 - Somalia
- 1991 - Israel
- 1991 - Haiti
- 1991 - Zimbabwe
- 1991 - Nepal
- 1991 - Grenada
- 1991 - Greece
- 1991 - Albania
- 1991 - Estonia
- 1991 - Lithuania
- 1992 - United States
- 1992 - Benin
- 1992 - Seychelles
- 1992 - Cambodia
- 1992 - Guatemala
- 1992 - Angola
- 1992 - Switzerland
- 1992 - Brazil
- 1992 - Paraguay
- 1992 - Côte d'Ivoire
- 1992 - Lesotho
- 1992 - Latvia
- 1992 - Croatia
- 1992 - Slovenia
- 1992 - Azerbaijan
- 1993 - Ethiopia
- 1993 - Czechia
- 1993 - Moldova
- 1993 - Mozambique
- 1993 - Nigeria
- 1993 - Bosnia and Herzegovina
- 1993 - Cape Verde
- 1993 - Malawi
- 1993 - Dominica
- 1993 - Slovakia
- 1993 - Armenia
- 1994 - Kyrgyzstan
- 1994 - Namibia
- 1994 - North Macedonia
- 1994 - Georgia
- 1995 - Chad
- 1995 - Uzbekistan
- 1995 - Uganda
- 1996 - Sierra Leone
- 1996 - Kuwait
- 1996 - Thailand
- 1996 - Belize
- 1997 - Monaco
- 1997 - Turkmenistan
- 1998 - China
- 1998 - Liechtenstein
- 1998 - South Africa
- 1999 - Burkina Faso
- 1999 - Tajikistan
- 2000 - Botswana
- 2000 - Ghana
- 2000 - Botswana
- 2000 - Bangladesh
- 2001 - Nauru
- 2001 - Serbia
- 2002 - Djibouti
- 2003 - Timor-Leste
- 2003 - Turkey
- 2004 - Eswatini
- 2004 - Mauritania
- 2006 - Bahrain
- 2006 - Maldives
- 2006 - Andorra
- 2006 - Montenegro
- 2008 - Bahamas
- 2008 - Comoros
- 2008 - Vanuatu
- 2008 - Cuba
- 2008 - Papua New Guinea
- 2008 - Samoa
- 2010 - Guinea-Bissau
- 2017 - São Tomé and Príncipe
- 2018 - Fiji
- 2018 - Qatar
- 2018 - Marshall Islands
- 2019 - Antigua and Barbuda
- 2024 - South Sudan
