Afghanistan, Albania, Argentina, Australia, Austria, Belarus, Brazil, Bulgaria, Canada, Cuba, Denmark, Dominican Republic, Egypt, El Salvador, Ethiopia, France, Germany, Greece, Guatemala, Haiti, Holy See, Hungary, Iceland, India, Indonesia, Israel, Italy, Japan, Republic of Korea, Monaco, Morocco, Myanmar, Netherlands, New Zealand, Norway, Pakistan, Paraguay, Peru, Poland, Portugal, Romania, Russian Federation, Socialist Federal Rep. of Yugoslavia, South Africa, Spain, Sri Lanka, Sweden, Switzerland, Thailand, Tunisia, Turkey, Ukraine, United Kingdom, United States, Venezuela, Vietnam
1958 Belgium, Ecuador, Finland, Iran, Luxembourg, Mexico, Philippines, Sudan
1959 Iraq
1960 Chile, Colombia, Ghana, Senegal
1961 Lebanon, Mali, Democratic Republic of the Congo
1962 Liberia, Saudi Arabia
1963 Algeria, Bolivia, Côte d´Ivoire, Libyan Arab Jamahiriya, Syria, Uruguay
1964 Cameroon, Gabon, Kuwait, Nigeria
1965 Costa Rica, Cyprus, Jamaica, Kenya, Madagascar
1966 Jordan, Panama
1967 Sierra Leone, Singapore, Uganda
1968 Liechtenstein
1969 Malaysia, Niger, Zambia
1970 Ireland
1972 Bangladesh
1973 Mongolia
1974 Mauritius
1976 Qatar, United Arab Emirates, Tanzania
1977 Nicaragua
1983 Namibia
1984 China
1986 Zimbabwe
1992 Estonia, Slovenia
1993 Armenia, Croatia, Czech Republic, Lithuania, Slovakia
1994 The Former Yugoslav Republic of Macedonia, Kazakhstan, Marshall Islands, Uzbekistan, Yemen
1995 Bosnia and Herzegovina
1996 Georgia
1997 Latvia, Malta, Moldova
1998 Burkina Faso
1999 Angola, Benin
2000 Tajikistan
2001 Azerbaijan, Central African Republic, Serbia
2002 Eritrea, Botswana
2003 Honduras, Seychelles, Kyrgyzstan
2004 Mauritania, Togo
2005 Chad
2006 Belize, Malawi, Montenegro, Mozambique
2007 Cape Verde
2008 Nepal, Palau
2009 Bahrain, Burundi, Cambodia, Congo, Lesotho, Oman, Rwanda
2011 Laos People's Democratic Republic, Tonga
2012 Dominica, Papua New Guinea
Member States of the IAEA