| 1970 | 1990 | 2000 | 2005 | 2010 | |
|---|---|---|---|---|---|
| Bayan-Ulgii | 3.8 | 7.3 | 5.6 | 6.7 | 23.2 |
| Zavkhan | 2.4 | 6.6 | 0.4 | 22.8 | |
| Orkhon | 9.5 | 8.3 | 3.8 | 21.9 | |
| Tov | 9.1 | 10.6 | 5.9 | 3.8 | 16.4 |
| Darkhan-Uul | 14.3 | 5.5 | 2.3 | 14.3 | |
| Govi-Altai | 3.3 | 12.3 | 10.9 | 9.2 | 14.1 |
| Selenge | 10.8 | 11.1 | 8.4 | 3.8 | 13.7 |
| Khovsgol | 4.6 | 12.0 | 7.1 | 8.8 | 12.9 |
| Dornod | 2.4 | 8.6 | 4.3 | 6.9 | 12.1 |
| Uvs | 7.0 | 7.3 | 2.9 | 8.3 | 12.1 |
| Bulgan | 6.5 | 12.6 | 10.0 | 6.6 | 11.7 |
| Khovd | 7.2 | 7.8 | 9.4 | 9.8 | 8.5 |
| Khentii | 5.3 | 11.7 | 2.2 | 7.2 | 8.3 |
| Arkhangai | 3.6 | 12.1 | 4.2 | 5.4 | 8.1 |
| Ovorkhangai | 5.8 | 13.5 | 5.6 | 0.6 | 6.3 |
| Bayankhongor | 2.3 | 21.2 | 18.0 | 8.2 | 5.1 |
| Sukhbaatar | 3.4 | 13.8 | 5.0 | ||
| Dundgovi | 1.9 | ||||
| Ulaanbaatar | 7.0 |