| Date | Population | Country | % Correct |
|---|---|---|---|
| Unknown | 1423 mil | China | 100%
|
| Unknown | 1470 mil | India | 99%
|
| 1914 | 352 mil | United States | 99%
|
| 1972 | 213 mil | Brazil | 96%
|
| 1948 | 143 mil | Russia | 96%
|
| 1999 | 132 mil | Mexico | 91%
|
| 1965 | 286 mil | Indonesia | 90%
|
| 1967 | 123 mil | Japan | 90%
|
| 1992 | 240 mil | Nigeria | 88%
|
| 1988 | 257 mil | Pakistan | 88%
|
| 2019 | 119 mil | Egypt | 82%
|
| 1988 | 177 mil | Bangladesh | 81%
|
| 2021 | 115 mil | D. R. Congo | 74%
|
| 2014 | 117 mil | Philippines | 70%
|
| 2016 | 137 mil | Ethiopia | 68%
|
| 2023 | 102 mil | Vietnam | 68%
|