| Year | Rank | Population | Answer | % Correct |
|---|---|---|---|---|
| 2. | 545.17M | China | 100%
| |
| 5. | 477.7M | China | 100%
| |
| 2110 | 1. | 1.43B | India | 100%
|
| 2120 | 1. | 1.35B | India | 100%
|
| 2130 | 1. | 1.28B | India | 100%
|
| 2140 | 1. | 1.18B | India | 100%
|
| 2150 | 1. | 1.09B | India | 100%
|
| 2160 | 1. | 1.01B | India | 100%
|
| 2170 | 1. | 934.7M | India | 100%
|
| 2180 | 1. | 879.64M | India | 100%
|
| 2190 | 1. | 830.62M | India | 100%
|
| 2200 | 1. | 797.54M | India | 100%
|
| 5. | 441.41M | United States of America | 100%
| |
| 5. | 448.17M | United States of America | 100%
| |
| 5. | 454.98M | United States of America | 100%
| |
| 4. | 461.68M | United States of America | 100%
| |
| 4. | 468.45 | United States of America | 100%
| |
| 4. | 475.2M | United States of America | 100%
| |
| 4. | 481.98M | United States of America | 100%
| |
| 3. | 488.73M | United States of America | 100%
| |
| 4. | 478.18M | Nigeria | 93%
| |
| 4. | 479.7M | Nigeria | 93%
| |
| 4. | 474.63M | Nigeria | 93%
| |
| 4. | 466.65M | Nigeria | 93%
| |
| 4. | 458.75M | Nigeria | 93%
| |
| 3. | 519.45M | Pakistan | 91%
| |
| 2. | 528.44M | Pakistan | 91%
| |
| 2. | 533.69M | Pakistan | 91%
| |
| 3. | 531.19M | Pakistan | 91%
| |
| 3. | 524.85M | Pakistan | 91%
| |
| 3. | 515.71M | Pakistan | 91%
| |
| 3. | 504.49M | Pakistan | 91%
| |
| 3. | 493.56M | Pakistan | 91%
| |
| 3. | 482.83M | Pakistan | 91%
| |
| 4. | 472.37M | Pakistan | 91%
| |
| 5. | 459.82M | Democratic Republic of the Congo | 86%
| |
| 3. | 492.93M | Democratic Republic of the Congo | 86%
| |
| 3. | 518.44M | Democratic Republic of the Congo | 86%
| |
| 2. | 543.33M | Democratic Republic of the Congo | 86%
| |
| 2. | 566.37M | Democratic Republic of the Congo | 86%
| |
| 2. | 581.71M | Democratic Republic of the Congo | 86%
| |
| 2. | 594.34M | Democratic Republic of the Congo | 86%
| |
| 2. | 598.5M | Democratic Republic of the Congo | 86%
| |
| 2. | 598.16M | Democratic Republic of the Congo | 86%
| |
| 2. | 590.44M | Democratic Republic of the Congo | 86%
| |
| 5. | 442.51M | Ethiopia | 77%
| |
| 5. | 443.5M | Ethiopia | 77%
| |
| 5. | 438.13M | Ethiopia | 77%
| |
| 5. | 440.06M | Tanzania | 60%
| |
| 5. | 443.56M | Tanzania | 60%
|