| No. | Governorate | 1992 | 2013 | 2017 | No. | Governorate | 1992 | 2013 | 2017 |
| 1 | Amara | 23.2 | 24.2 | 26.4 | 10 | Kirkuk | 19.3 | 21.0 | 22.2 |
| 2 | Baghdad | 22.2 | 22.8 | 24.0 | 11 | Kut | 23.1 | 23.8 | 26.4 |
| 3 | Baquba | 22.7 | 22.6 | 24.4 | 12 | Mosul | 19.0 | 19.8 | 20.9 |
| 4 | Basra | 23.7 | 24.8 | 27.2 | 13 | Najaf | 20.9 | 22.3 | 23.5 |
| 5 | Diwaniyah | 23.8 | 23.9 | 25.4 | 14 | Nasiriyah | 23.6 | 24.7 | 26.7 |
| 6 | Duhok | 18.0 | 19.2 | 18.9 | 15 | Ramadi | 20.8 | 22.2 | 23.4 |
| 7 | Erbil | 21.0 | 20.5 | 20.6 | 16 | Samawa | 22.3 | 24.3 | 25.7 |
| 8 | Hilla | 23.0 | 23.4 | 24.7 | 17 | Sulaimaniyah | 17.8 | 18.9 | 19.7 |
| 9 | Karbala | 22.2 | 21.3 | 23.8 | 18 | Tikrit | 20.2 | 22.2 | 22.7 |