| Year | Population (Estimated) | Answer | % Correct |
|---|---|---|---|
| 1810 | 350m | China | 100%
|
| 1920 | 467m | China | 100%
|
| 2010 | 1.354bil | China | 100%
|
| 2100 | 732m | China | 100%
|
| 1920 | 31m | USA | 100%
|
| 2010 | 309m | USA | 100%
|
| 2100 | 336m | USA | 100%
|
| 1810 | 171m | India | 99%
|
| 1920 | 266m | India | 99%
|
| 2010 | 1.219bil | India | 99%
|
| 2100 | 1.09b | India | 99%
|
| 1810 | 30.29m | France | 95%
|
| 2010 | 244m | Indonesia | 95%
|
| 2100 | 791m | Nigeria | 95%
|
| 1810 | 31m | Russia | 93%
|
| 1920 | 30.74m | Russia | 93%
|
| 2100 | 248m | Pakistan | 92%
|
| 2010 | 192m | Brazil | 91%
|
| 1920 | 30.58m | Germany | 89%
|
| 1810 | 30.64m | Japan | 84%
|