| Year | Population | Answer | % Correct |
|---|---|---|---|
| 2000 | 1.26 billion | China | 100%
|
| 2025 | 1.42 billion | China | 100%
|
| 2050 | 1.31 billion | China | 100%
|
| 2075 | 1.03 billion | China | 100%
|
| 2100 | 766.67 million | China | 100%
|
| 2000 | 1.06 billion | India | 100%
|
| 2025 | 1.45 billion | India | 100%
|
| 2050 | 1.67 billion | India | 100%
|
| 2075 | 1.68 billion | India | 100%
|
| 2100 | 1.53 billion | India | 100%
|
| 2000 | 282.4 million | USA | 100%
|
| 2025 | 343.6 million | USA | 100%
|
| 2050 | 375.39 million | USA | 100%
|
| 2075 | 389.39 million | USA | 100%
|
| 2100 | 394.04 million | USA | 100%
|
| 2025 | 234.57 million | Nigeria | 97%
|
| 2050 | 377.46 million | Nigeria | 97%
|
| 2075 | 492.95 million | Nigeria | 97%
|
| 2100 | 546.09 million | Nigeria | 97%
|
| 2025 | 249.95 million | Pakistan | 97%
|
| 2050 | 367.81 million | Pakistan | 97%
|
| 2075 | 453.26 million | Pakistan | 97%
|
| 2100 | 487.02 million | Pakistan | 97%
|
| 2000 | 214.07 million | Indonesia | 94%
|
| 2025 | 282 million | Indonesia | 94%
|
| 2050 | 317.23 million | Indonesia | 94%
|
| 2075 | 315.82 million | Indonesia | 94%
|
| 2100 | 296.62 million | Indonesia | 94%
|
| 2050 | 203.9 million | Bangladesh | 88%
|
| 2075 | 201.89 million | Bangladesh | 88%
|
| 2025 | 218.8 million | Brazil | 88%
|
| 2050 | 230.89 million | Brazil | 88%
|
| 2075 | 213.72 million | Brazil | 88%
|
| 2050 | 214.81 million | Ethiopia | 81%
|
| 2075 | 284.53 million | Ethiopia | 81%
|
| 2100 | 323.74 million | Ethiopia | 81%
|
| 2050 | 217.49 million | DR Congo | 78%
|
| 2075 | 339.12 million | DR Congo | 78%
|
| 2100 | 432.38 million | DR Congo | 78%
|
| 2100 | 205.23 million | Egypt | 75%
|
| 2100 | 244.82 million | Tanzania | 53%
|