| Year | Country | % Correct |
|---|---|---|
| 2001 | Netherlands | 98%
|
| 2009 | Norway | 98%
|
| 2014 | United Kingdom | 97%
|
| 2020 | United Kingdom | 97%
|
| 2015 | United States | 97%
|
| 2003 | Belgium | 95%
|
| 2013 | France | 95%
|
| 2009 | Sweden | 95%
|
| 2017 | Australia | 93%
|
| 2012 | Denmark | 93%
|
| 2005 | Spain | 93%
|
| 2017 | Finland | 92%
|
| 2017 | Germany | 92%
|
| 2010 | Portugal | 92%
|
| 2019 | Austria | 90%
|
| 2013 | Brazil | 90%
|
| 2015 | Ireland | 88%
|
| 2013 | New Zealand | 88%
|
| 2005 | Canada | 86%
|
| 2020 | Mexico | 86%
|
| 2010 | Argentina | 85%
|
| 2010 | Iceland | 85%
|
| 2015 | Luxembourg | 81%
|
| 2006 | South Africa | 71%
|
| 2013 | Uruguay | 71%
|
| 2016 | Colombia | 68%
|
| 2005 | Andorra | 64%
|
| 2017 | Malta | 63%
|
| 2020 | Costa Rica | 56%
|
| 2019 | Ecuador | 49%
|
| 2019 | Taiwan | 47%
|