| date | population | country | % Correct |
|---|---|---|---|
| 100 BC | 1386 m | China | 100%
|
| 500 | 1322 m | India | 98%
|
| 1880 | 326 m | United States | 97%
|
| 1966 | 67 m | France | 95%
|
| 1949 | 208 m | Brazil | 93%
|
| 1893 | 83 m | Germany | 93%
|
| 1969 | 123 m | Mexico | 92%
|
| 1948 | 66 m | United Kingdom | 90%
|
| 1964 | 209 m | Pakistan | 86%
|
| 1916 | 262 m | Indonesia | 85%
|
| 1825 | 147 m | Russia | 85%
|
| 1960 | 61 m | Italy | 80%
|
| 1911 | 127 m | Japan | 80%
|
| 1965 | 194 m | Nigeria | 80%
|
| 1982 | 105 m | Philippines | 73%
|
| 1960 | 163 m | Bangladesh | 71%
|
| 1985 | 94 m | Egypt | 71%
|
| 1987 | 81 m | Iran | 69%
|
| 1992 | 102 m | Ethiopia | 64%
|
| 2012 | 51 m | South Korea | 63%
|
| 1985 | 80 m | Turkey | 63%
|
| 1977 | 94 m | Vietnam | 63%
|
| 2008 | 57 m | South Africa | 61%
|
| 1984 | 68 m | Thailand | 61%
|
| 2003 | 82 m | Dem Rep Congo | 59%
|
| 2014 | 57 m | Tanzania | 37%
|
| 2005 | 55 m | Myanmar | 36%
|
| 2017 | 50 m | Kenya | 31%
|