| 2016 | 2019 | 2020 | |
|---|---|---|---|
| Central | 2,752 | 4,306 | 4,910 |
| Copperbelt | 3,953 | 6,258 | 6,625 |
| Eastern | 1,967 | 3,642 | 3,638 |
| Luapula | 1,195 | 2,214 | 2,573 |
| Lusaka | 3,383 | 4,493 | 4,181 |
| Muchinga | 1,518 | 2,277 | 2,469 |
| North-Western | 1,988 | 2,891 | 2,979 |
| Northern | 1,654 | 2,503 | 2,622 |
| Southern | 2,835 | 3,438 | 3,373 |
| Western | 1,034 | 1,860 | 2,021 |