| Year | Host Country | Host City | % Correct |
|---|---|---|---|
| 1964 | Soviet Union | Moscow | 96%
|
| 1968 | Soviet Union | Moscow | 96%
|
| 1973 | Soviet Union | Moscow | 96%
|
| 1992 | Russia | Moscow | 96%
|
| 1982 | Hungary | Budapest | 93%
|
| 1988 | Australia | Sydney | 93%
|
| 1977 | Yugoslavia | Belgrade | 89%
|
| 1959 | Romania | Bucharest | 89%
|
| 1969 | Romania | Bucharest | 89%
|
| 1978 | Romania | Bucharest | 89%
|
| 1999 | Romania | Bucharest | 89%
|
| 1979 | United Kingdom | London | 89%
|
| 1990 | China | Beijing | 85%
|
| 1984 | Czech Republic | Prague | 85%
|
| 2003 | Japan | Tokyo | 85%
|
| 1994 | UK Colony | Hong Kong | 81%
|
| 2016 | China SAR | Hong Kong | 81%
|
| 2025 | Australia | Melbourne | 81%
|
| 2022 | Norway | Oslo | 81%
|
| 1966 | Bulgaria | Sofia | 81%
|
| 1975 | Bulgaria | Sofia | 81%
|
| 1963 | Poland | Warsaw | 81%
|
| 1986 | Poland | Warsaw | 81%
|
| 2017 | Brazil | Rio de Janeiro | 78%
|
| 2020 | Russia | St. Petersburg | 78%
|
| 2007 | Vietnam | Hanoi | 74%
|
| 1987 | Cuba | Havana | 74%
|
| 2006 | Slovenia | Ljubljana | 74%
|
| 2008 | Spain | Madrid | 74%
|
| 1998 | Taiwan | Taipei | 74%
|
| 2011 | Netherlands | Amsterdam | 70%
|
| 2004 | Greece | Athens | 70%
|
| 1988 | Australia | Canberra | 70%
|
| 1983 | France | Paris | 70%
|
| 2010 | Kazakhstan | Astana | 67%
|
| 1993 | Turkey | Istanbul | 67%
|
| 1995 | Canada | Toronto | 67%
|
| 2014 | South Africa | Cape Town | 63%
|
| 1996 | India | Mumbai | 63%
|
| 2002 | United Kingdom | Glasgow | 52%
|
| 1981 | United States | Washington D.C. | 52%
|
| 2001 | United States | Washington D.C. | 52%
|
| 2018 | Romania | Cluj-Napoca | 48%
|
| 2009 | Germany | Bremen | 37%
|
| 1963 | Poland | Wrocław | 33%
|
| 2019 | United Kingdom | Bath | 30%
|
| 1965 | East Germany | East Berlin | 30%
|
| 1974 | East Germany | East Berlin | 30%
|
| 2015 | Thailand | Chiang Mai | 26%
|
| 1959 | Romania | Brasov | 19%
|
| 2023 | Japan | Chiba | 15%
|
| 2000 | South Korea | Daejeon | 15%
|
| 2005 | Mexico | Mérida | 15%
|
| 1975 | Bulgaria | Burgas | 11%
|
| 1989 | West Germany | Braunschweig | 7%
|
| 1974 | East Germany | Erfurt | 7%
|
| 1997 | Argentina | Mar del Plata | 7%
|
| 2012 | Argentina | Mar del Plata | 7%
|
| 1972 | Poland | Toruń | 7%
|
| 1962 | Czech Republic | České Budějovice | 4%
|
| 1967 | Yugoslavia | Cetinje | 4%
|
| 1976 | Austria | Lienz | 4%
|
| 1960 | Romania | Sinaia | 4%
|
| 1985 | Finland | Joutsa | 0%
|
| 1970 | Hungary | Keszthely | 0%
|
| 2013 | Colombia | Santa Maria | 0%
|
| 1991 | Sweden | Sigtuna | 0%
|
| 1961 | Hungary | Veszprém | 0%
|
| 1971 | Czech Republic | Žilina | 0%
|