| Year(s) | Country | % Correct |
|---|---|---|
| 2009,2010,2016 | Canada | 99%
|
| 2009(2),2013,2014,2015,2016(2) | Germany | 97%
|
| 2009,2011,2013,2014,2016 | United Kingdom | 97%
|
| 2011 | Brazil | 96%
|
| 2010,2015 | India | 96%
|
| 2009,2014 | Italy | 96%
|
| 2016 | Spain | 96%
|
| 2016 | Argentina | 95%
|
| 2011,2014 | Australia | 95%
|
| 2009(2),2011(2),2014,2015 | France | 95%
|
| 2009,2012,2013,2014 | Mexico | 95%
|
| 2010 | Portugal | 95%
|
| 2009,2013 | Russia | 95%
|
| 2013(2) | South Africa | 95%
|
| 2014(2) | Belgium | 94%
|
| 2009,2014,2016 | China | 94%
|
| 2009 | Egypt | 94%
|
| 2009,2010,2014,2016 | Japan | 94%
|
| 2009 | Norway | 94%
|
| 2011,2014,2016 | Poland | 94%
|
| 2011 | Ireland | 92%
|
| 2014 | Netherlands | 92%
|
| 2013 | Sweden | 92%
|
| 2011 | Chile | 91%
|
| 2009,2014,2015,2016 | Saudi Arabia | 91%
|
| 2009,2015 | Turkey | 91%
|
| 2009(2) | Denmark | 90%
|
| 2013,2016 | Israel | 90%
|
| 2016 | Peru | 90%
|
| 2013 | Palestine | 88%
|
| 2009,2010,2012,2014 | South Korea | 88%
|
| 2012 | Colombia | 87%
|
| 2016 | Greece | 87%
|
| 2010,2011 | Indonesia | 87%
|
| 2015 | Panama | 85%
|
| 2016 | Vietnam | 85%
|
| 2016 | Cuba | 83%
|
| 2015 | Kenya | 83%
|
| 2012 | Thailand | 81%
|
| 2009 | Iraq | 79%
|
| 2014,2015 | Malaysia | 77%
|
| 2014,2015 | Philippines | 77%
|
| 2009,2010 | Czech Republic | 76%
|
| 2013 | Jordan | 74%
|
| 2012 | Cambodia | 73%
|
| 2015 | Jamaica | 72%
|
| 2016 | Laos | 72%
|
| 2013 | Costa Rica | 69%
|
| 2015 | Ethiopia | 69%
|
| 2012,2014 | Myanmar | 68%
|
| 2013 | Tanzania | 65%
|
| 2009,2014 | Vatican City | 65%
|
| 2010(2),2012,2014 | Afghanistan | 64%
|
| 2009 | Singapore | 64%
|
| 2014 | Estonia | 56%
|
| 2009 | Ghana | 55%
|
| 2011 | El Salvador | 51%
|
| 2013 | Senegal | 47%
|
| 2009 | Trinidad and Tobago | 37%
|