| Year | Country | % Correct |
|---|---|---|
| 221 BC | China | 94%
|
| ~3000 BC | Egypt | 94%
|
| 660 BC | Japan | 94%
|
| 843 | France | 89%
|
| 871 | UK | 89%
|
| 1776 | USA | 89%
|
| 1479 | Spain | 83%
|
| 1901 | Australia | 78%
|
| 1156 | Austria | 72%
|
| 979 | Belgium | 72%
|
| 1500 | Brazil | 72%
|
| 1821 | Mexico | 72%
|
| 966 | Poland | 72%
|
| 900 | Sweden | 72%
|
| 862 | Russia | 61%
|
| 1542 | Peru | 50%
|
| 1810 | Colombia | 44%
|
| 1492 | Cuba | 44%
|
| 1238 | Thailand | 44%
|
| 1747 | Afghanistan | 39%
|
| 1206 | Mongolia | 39%
|
| 969 | Serbia | 28%
|
| 1966 | Botswana | 17%
|
| 1240 | Mali | 17%
|
| 1962 | Uganda | 17%
|