| 2005 | 2010 | 2011 | |
|---|---|---|---|
| Tigray | 12.75 | 12.92 | 182.28 |
| Oromiya | 30.38 | 65.14 | 34.34 |
| Amhara | 21.98 | 23.22 | 25.83 |
| Southern Nations, Nationalities, and People's Region | 7.66 | 16.12 | |
| Dire Dawa City Administration | 0.61 | 3.09 | 3.76 |
| Somali | 1.58 | 2.81 | 2.97 |
| Harari | 0.31 | 0.81 | 0.21 |
| Benishangul Gumz | 0.06 | 0.58 | 0.12 |
| Afar | 6.99 | 3.86 | |
| Addis Ababa | 0.01 |