| Year | Country | % Correct |
|---|---|---|
| 2015 | United States | 98%
|
| 2005 | Canada | 92%
|
| 2015 | Finland | 91%
|
| 2017 | Germany | 91%
|
| 2000 | Netherlands | 91%
|
| 2008 | Norway | 91%
|
| 2014 | United Kingdom | 91%
|
| 2009 | Sweden | 90%
|
| 2013 | France | 89%
|
| 2005 | Spain | 89%
|
| 2003 | Belgium | 86%
|
| 2015 | Ireland | 86%
|
| 2010 | Portugal | 85%
|
| 2017 | Australia | 84%
|
| 2012 | Denmark | 83%
|
| 2010 | Iceland | 80%
|
| 2010 | Argentina | 78%
|
| 2013 | New Zealand | 78%
|
| 2013 | Brazil | 77%
|
| 2014 | Luxembourg | 74%
|
| 2006 | South Africa | 59%
|
| 2016 | Colombia | 56%
|
| 2013 | Uruguay | 53%
|
| 2017 | Malta | 43%
|