| Year | Country | % Correct |
|---|---|---|
| 221 BC | China | 94%
|
| ~3000 BC | Egypt | 94%
|
| 660 BC | Japan | 94%
|
| 843 | France | 88%
|
| 871 | UK | 88%
|
| 1776 | USA | 88%
|
| 1479 | Spain | 82%
|
| 1901 | Australia | 76%
|
| 1156 | Austria | 71%
|
| 979 | Belgium | 71%
|
| 1500 | Brazil | 71%
|
| 1821 | Mexico | 71%
|
| 966 | Poland | 71%
|
| 900 | Sweden | 71%
|
| 862 | Russia | 59%
|
| 1542 | Peru | 47%
|
| 1747 | Afghanistan | 41%
|
| 1810 | Colombia | 41%
|
| 1492 | Cuba | 41%
|
| 1238 | Thailand | 41%
|
| 1206 | Mongolia | 35%
|
| 969 | Serbia | 29%
|
| 1966 | Botswana | 18%
|
| 1240 | Mali | 18%
|
| 1962 | Uganda | 18%
|