| 2006 | |
|---|---|
| Kisii | 16.4 |
| Nyamira | 9.6 |
| Mombasa | 8.6 |
| Nairobi | 7.9 |
| Migori | 6.9 |
| Tharaka Nithi | 4.7 |
| Uasin Gishu | 4.4 |
| Nyandarua | 3.8 |
| Laikipia | 3.8 |
| Kwale | 3.6 |
| Embu | 3.6 |
| Homa Bay | 3.6 |
| Narok | 3.3 |
| Nandi | 3.2 |
| Kericho | 3.0 |
| Bomet | 2.8 |
| Kakamega | 2.3 |
| Siaya | 2.2 |
| Samburu | 2.1 |
| Kirinyaga | 2.0 |
| Makueni | 1.9 |
| Machakos | 1.9 |
| Turkana | 1.9 |
| Busia | 1.9 |
| Mandera | 1.8 |
| Kajiado | 1.8 |
| Isiolo | 1.6 |
| Taita Taveta | 1.5 |
| Trans Nzoia | 1.5 |
| Muranga | 1.1 |
| Elgeyo Marakwet | 1.1 |
| Marsabit | 1.0 |
| Vihiga | 0.9 |
| Kiambu | 0.8 |
| Kisumu | 0.8 |
| Baringo | 0.8 |
| West Pokot | 0.7 |
| Kitui | 0.5 |
| Nyeri | 0.4 |
| Nakuru | 0.4 |
| Bungoma | 0.3 |
| Lamu | 0.1 |
| Wajir | 0.1 |
| Kilifi | 0.0 |
| Tana River | 0.0 |
| Meru | 0.0 |
| Garissa | 0.0 |