Ratifying countries
- 1967 - Cameroon
- 1967 - Central African Republic
- 1967 - Algeria
- 1967 - Sweden
- 1967 - Norway
- 1967 - Argentina
- 1967 - Senegal
- 1967 - Gambia
- 1967 - Vatican City
- 1968 - Israel
- 1968 - United States
- 1968 - Ireland
- 1968 - Nigeria
- 1968 - Guinea
- 1968 - Tanzania
- 1968 - Ghana
- 1968 - Turkey
- 1968 - Cyprus
- 1968 - Liechtenstein
- 1968 - Switzerland
- 1968 - Denmark
- 1968 - United Kingdom
- 1968 - Netherlands
- 1968 - Greece
- 1968 - Finland
- 1968 - Tunisia
- 1968 - Iceland
- 1969 - Ethiopia
- 1969 - Botswana
- 1969 - Eswatini
- 1969 - Belgium
- 1969 - Togo
- 1969 - Zambia
- 1969 - Ecuador
- 1969 - Germany
- 1969 - Canada
- 1969 - Botswana
- 1970 - Benin
- 1970 - Niger
- 1970 - Republic of the Congo
- 1970 - Paraguay
- 1970 - Côte d'Ivoire
- 1970 - Uruguay
- 1971 - France
- 1971 - Morocco
- 1971 - Burundi
- 1971 - Malta
- 1971 - Luxembourg
- 1972 - Chile
- 1972 - Italy
- 1972 - Brazil
- 1972 - Fiji
- 1973 - Australia
- 1973 - Austria
- 1973 - New Zealand
- 1973 - Gabon
- 1973 - Mali
- 1974 - Sudan
- 1975 - Democratic Republic of the Congo
- 1976 - Guinea-Bissau
- 1976 - Uganda
- 1976 - Portugal
- 1977 - Djibouti
- 1978 - São Tomé and Príncipe
- 1978 - Somalia
- 1978 - Panama
- 1978 - Costa Rica
- 1978 - Spain
- 1978 - Suriname
- 1978 - Dominican Republic
- 1980 - Liberia
- 1980 - Seychelles
- 1980 - Jamaica
- 1980 - Yemen
- 1980 - Colombia
- 1980 - Nicaragua
- 1980 - Burkina Faso
- 1980 - Rwanda
- 1981 - Philippines
- 1981 - Zimbabwe
- 1981 - Sierra Leone
- 1981 - Chad
- 1981 - Egypt
- 1981 - Kenya
- 1981 - Angola
- 1981 - Lesotho
- 1982 - China
- 1982 - Bolivia
- 1982 - Japan
- 1983 - Peru
- 1983 - Guatemala
- 1983 - El Salvador
- 1983 - United Arab Emirates
- 1984 - Haiti
- 1986 - Venezuela
- 1986 - Equatorial Guinea
- 1986 - Papua New Guinea
- 1986 - Tuvalu
- 1987 - Cape Verde
- 1987 - Mauritania
- 1987 - Malawi
- 1989 - Mozambique
- 1989 - Hungary
- 1990 - Belize
- 1991 - Poland
- 1991 - Romania
- 1992 - Honduras
- 1992 - Cambodia
- 1992 - South Korea
- 1992 - Albania
- 1992 - Croatia
- 1992 - Slovenia
- 1993 - Czechia
- 1993 - Bahamas
- 1993 - Russia
- 1993 - Bosnia and Herzegovina
- 1993 - Bulgaria
- 1993 - Azerbaijan
- 1993 - Slovakia
- 1993 - Tajikistan
- 1993 - Armenia
- 1994 - North Macedonia
- 1994 - Dominica
- 1994 - Samoa
- 1995 - Solomon Islands
- 1995 - Namibia
- 1995 - Antigua and Barbuda
- 1996 - Kyrgyzstan
- 1996 - South Africa
- 1997 - Latvia
- 1997 - Estonia
- 1997 - Lithuania
- 1998 - Turkmenistan
- 1999 - Georgia
- 1999 - Kazakhstan
- 2000 - Mexico
- 2000 - Trinidad and Tobago
- 2000 - Tonga
- 2001 - Serbia
- 2001 - Belarus
- 2002 - Moldova
- 2002 - Ukraine
- 2003 - Saint Vincent and the Grenadines
- 2003 - Saint Vincent and the Grenadines
- 2003 - Timor-Leste
- 2005 - Afghanistan
- 2006 - Montenegro
- 2010 - Monaco
- 2011 - Nauru
- 2018 - South Sudan
