| Location | Membership | Member Nations | % Correct |
|---|---|---|---|
| Oceania | 1971 | Australia | 98%
|
| Europe | 1961 | Belgium | 98%
|
| North America | 1961 | Canada | 98%
|
| Europe | 1969 | Finland | 98%
|
| East Asia | 1964 | Japan | 98%
|
| East Asia | 1996 | South Korea | 98%
|
| Europe | 1961 | Spain | 98%
|
| South America | 2010 | Chile | 97%
|
| Europe | 1961 | Denmark | 97%
|
| North America | 1994 | Mexico | 97%
|
| Europe | 1961 | Norway | 97%
|
| Europe | 1996 | Poland | 97%
|
| Europe | 1961 | Portugal | 97%
|
| Europe | 1961 | Sweden | 97%
|
| North America | 1961 | United States | 97%
|
| Europe | 1961 | Austria | 95%
|
| South America | 2020 | Colombia | 95%
|
| Europe | 2010 | Estonia | 95%
|
| Europe | 1961 | France | 95%
|
| Europe | 1961 | Netherlands | 95%
|
| Europe | 1995 | Czech Republic | 93%
|
| Europe | 1961 | Germany | 93%
|
| Europe | 1996 | Hungary | 93%
|
| Europe | 1962 | Italy | 93%
|
| Europe | 2016 | Latvia | 93%
|
| Oceania | 1973 | New Zealand | 93%
|
| Europe | 1961 | United Kingdom | 93%
|
| Europe | 1961 | Greece | 92%
|
| Middle East | 2010 | Israel | 92%
|
| Europe | 1961 | Iceland | 90%
|
| Europe | 1961 | Ireland | 90%
|
| Europe | 2018 | Lithuania | 90%
|
| Europe | 1961 | Luxembourg | 90%
|
| Middle East | 1961 | Turkey | 90%
|
| Central America | 2021 | Costa Rica | 89%
|
| Europe | 1961 | Switzerland | 89%
|
| Europe | 2000 | Slovakia | 85%
|
| Europe | 2010 | Slovenia | 85%
|