| Year | Continent | Country | % Correct |
|---|---|---|---|
| 1979 | Europe | Norway | 100%
|
| 1974 | Europe | Sweden | 97%
|
| 1973 | Europe | Denmark | 95%
|
| 1955 | Asia | Azerbaijan | 92%
|
| 1988 | North America | Canada | 92%
|
| 1987 | Europe | Czech Republic | 92%
|
| 1955 | Asia | Georgia | 92%
|
| 1992 | Europe | Germany | 92%
|
| 1978 | Europe | Italy | 92%
|
| 1984 | Europe | Netherlands | 92%
|
| 1955 | Europe/Asia | Russia | 92%
|
| 1955 | Asia | Armenia | 90%
|
| 1990 | Europe | Belgium | 90%
|
| 1990 | Europe | Bulgaria | 90%
|
| 1957 | Asia | China | 90%
|
| 1955 | Europe | Estonia | 90%
|
| 1975 | Europe | France | 90%
|
| 1986 | Europe | Greece | 90%
|
| 2019 | Europe | Ireland | 90%
|
| 1955 | Europe | Latvia | 90%
|
| 1955 | Europe | Lithuania | 90%
|
| 2007 | Europe | Portugal | 90%
|
| 1990 | Europe | Romania | 90%
|
| 1987 | Europe | Slovakia | 90%
|
| 2010 | Europe | Spain | 90%
|
| 1955 | Europe | Belarus | 87%
|
| 1977 | Europe | Croatia | 87%
|
| 1977 | Europe | Serbia | 87%
|
| 1955 | Europe | Ukraine | 87%
|
| 1996 | Europe | Albania | 85%
|
| 1977 | Europe | Bosnia and Herzegovina | 85%
|
| 1955 | Asia | Kazakhstan | 85%
|
| 1977 | Europe | Slovenia | 85%
|
| 1955 | Asia | Tajikistan | 85%
|
| 1975 | Europe | Austria | 82%
|
| 1955 | Europe | Moldova | 82%
|
| 1955 | Asia | Turkmenistan | 82%
|
| 1955 | Asia | Uzbekistan | 82%
|
| 2019 | Europe | Iceland | 79%
|
| 1955 | Asia | Kyrgyzstan | 79%
|
| 1977 | Europe | Montenegro | 79%
|
| 1977 | Europe | North Macedonia | 79%
|
| 1997 | Africa | South Africa | 79%
|
| 1983 | Asia | Turkey | 79%
|
| 1965 | North America | Cuba | 77%
|
| 2020 | Oceania | New Zealand | 77%
|
| 2002 | Europe | Switzerland | 77%
|
| 1975 | Asia | Vietnam | 77%
|
| 2021 | South America | Argentina | 72%
|
| 2022 | South America | Colombia | 72%
|
| 2021 | Asia | South Korea | 72%
|
| 1997 | Asia | Cambodia | 67%
|
| 2018 | Asia | Cyprus | 67%
|
| 1978 | Europe | Luxembourg | 67%
|
| 2012 | South America | Uruguay | 67%
|
| 2021 | Asia | Thailand | 64%
|
| 2022 | Europe | San Marino | 62%
|
| 1995 | South America | Guyana | 56%
|
| 1974 | Asia | Singapore | 54%
|
| 1989 | Asia | Mongolia | 49%
|
| 2002 | Asia | Nepal | 44%
|
| 1973 | Africa | Tunisia | 33%
|
| 1986 | Africa | Cape Verde | 31%
|
| 2015 | Africa | Mozambique | 31%
|
| 1993 | Africa | Guinea-Bissau | 26%
|
| 2012 | Africa | São Tomé and Príncipe | 23%
|