| Age (years) | Number of people (thousands) |
|---|---|
| 0-19 | 1,220 |
| 20-39 | 1,450 |
| 40-59 | 1,310 |
| 60-79 | 880 |
| 80+ | 200 |
| Age (years) | Number of people (thousands) |
|---|---|
| 0-19 | 1,080 |
| 20-39 | 1,390 |
| 40-59 | 1,490 |
| 60-79 | 1,180 |
| 80+ | 310 |
Suggest reasons for the changes in the population structure of Scotland between 2001 and 2021.