| 2006 | |
|---|---|
| Nyandarua | 17.2 |
| Kisii | 14.7 |
| Baringo | 14.4 |
| Busia | 13.7 |
| Nairobi | 13.5 |
| Nyamira | 12.1 |
| Kirinyaga | 11.7 |
| Siaya | 11.3 |
| Nyeri | 11.2 |
| Mombasa | 10.4 |
| Migori | 10.2 |
| Laikipia | 10.2 |
| Homa Bay | 9.7 |
| Kajiado | 9.7 |
| Taita Taveta | 9.1 |
| Samburu | 8.4 |
| Elgeyo Marakwet | 8.3 |
| Kisumu | 7.9 |
| Embu | 7.6 |
| Kitui | 6.1 |
| Bomet | 6.0 |
| Nakuru | 5.7 |
| Muranga | 5.5 |
| Meru | 5.3 |
| Kakamega | 5.3 |
| Uasin Gishu | 4.7 |
| Kiambu | 4.4 |
| Tharaka Nithi | 4.3 |
| Kwale | 4.2 |
| Lamu | 3.9 |
| Nandi | 3.2 |
| Kilifi | 3.1 |
| Vihiga | 3.0 |
| Kericho | 2.9 |
| Isiolo | 2.3 |
| Trans Nzoia | 2.3 |
| Bungoma | 2.2 |
| Tana River | 1.8 |
| Makueni | 1.7 |
| Turkana | 1.4 |
| West Pokot | 1.2 |
| Narok | 1.1 |
| Mandera | 1.0 |
| Wajir | 0.7 |
| Marsabit | 0.6 |
| Machakos | 0.1 |
| Garissa | 0.0 |