| Since | Country | % Correct |
|---|---|---|
| 1955 | Russia | 95%
|
| 2010 | Spain | 93%
|
| 1974 | Sweden | 93%
|
| 1979 | Norway | 91%
|
| 2007 | Portugal | 91%
|
| 2023 | Finland | 90%
|
| 1955 | Latvia | 88%
|
| 1955 | Lithuania | 88%
|
| 1984 | Netherlands | 88%
|
| 1990 | Belgium | 87%
|
| 1973 | Denmark | 87%
|
| 1992 | Germany | 87%
|
| 1990 | Bulgaria | 86%
|
| 1988 | Canada | 86%
|
| 1955 | Estonia | 86%
|
| 1978 | Italy | 86%
|
| 1990 | Romania | 86%
|
| 1957 | China | 85%
|
| 1955 | Ukraine | 85%
|
| 1975 | Austria | 84%
|
| 1987 | Czech Republic | 84%
|
| 1986 | Greece | 84%
|
| 2019 | Iceland | 84%
|
| 2019 | Ireland | 84%
|
| 1977 | Serbia | 84%
|
| 1977 | Slovenia | 84%
|
| 2002 | Switzerland | 84%
|
| 1955 | Belarus | 83%
|
| 1975 | France | 83%
|
| 1977 | Croatia | 81%
|
| 1978 | Luxembourg | 81%
|
| 1987 | Slovakia | 81%
|
| 1977 | Bosnia and Herzegovina | 80%
|
| 2021 | Argentina | 79%
|
| 2021 | South Korea | 79%
|
| 1996 | Albania | 78%
|
| 2020 | New Zealand | 77%
|
| 1955 | Armenia | 73%
|
| 1955 | Moldova | 73%
|
| 1977 | Montenegro | 73%
|
| 1983 | Turkey | 73%
|
| 1955 | Georgia | 71%
|
| 1977 | North Macedonia | 71%
|
| 1997 | South Africa | 71%
|
| 1955 | Azerbaijan | 70%
|
| 1965 | Cuba | 69%
|
| 2022 | Colombia | 66%
|
| 2011 | Uruguay | 66%
|
| 1955 | Kazakhstan | 65%
|
| 1974 | Singapore | 64%
|
| 1955 | Tajikistan | 63%
|
| 2021 | Thailand | 63%
|
| 1975 | Vietnam | 63%
|
| 1955 | Kyrgyzstan | 59%
|
| 1955 | Uzbekistan | 58%
|
| 2018 | Cyprus | 57%
|
| 2022 | San Marino | 57%
|
| 1955 | Turkmenistan | 57%
|
| 1997 | Cambodia | 55%
|
| 1989 | Mongolia | 55%
|
| 2002 | Nepal | 48%
|
| 1995 | Guyana | 33%
|
| 1973 | Tunisia | 21%
|
| 2015 | Mozambique | 20%
|
| 1986 | Cape Verde | 13%
|
| 2012 | São Tomé and Principe | 9%
|
| 1993 | Guinea-Bissau | 8%
|