| Paleolithic Era (from 10,000 to 250,000 years ago) | Agricultural Era (from 200 to 10,000 years ago) | Modern Industrial Era (since 1800) |
| Duration of each era, as a percentage of 250,000 years11 | 96% | 4% | 0.08% |
| Percentage of people who lived, out of 80 billion total | 12% | 68% | 20% |
| Percentage of years lived in each era (reflects changing life expectancies) | 9% | 62% | 29% |