| 2006 | |
|---|---|
| Turkana | 92.9 |
| Mandera | 85.7 |
| Wajir | 84.4 |
| Marsabit | 79.3 |
| Samburu | 77.7 |
| Tana River | 75.4 |
| Kwale | 72.9 |
| West Pokot | 68.7 |
| Kilifi | 66.9 |
| Busia | 66.0 |
| Makueni | 63.8 |
| Isiolo | 63.1 |
| Kitui | 62.5 |
| Kisii | 59.8 |
| Baringo | 58.5 |
| Machakos | 57.0 |
| Elgeyo Marakwet | 55.2 |
| Taita Taveta | 54.8 |
| Garissa | 54.5 |
| Bungoma | 52.2 |
| Kakamega | 52.1 |
| Bomet | 50.7 |
| Trans Nzoia | 50.1 |
| Nyandarua | 49.8 |
| Laikipia | 48.1 |
| Nandi | 47.2 |
| Nyamira | 46.3 |
| Migori | 45.8 |
| Kisumu | 45.0 |
| Uasin Gishu | 44.6 |
| Homa Bay | 43.1 |
| Nakuru | 41.8 |
| Vihiga | 41.3 |
| Embu | 40.8 |
| Kericho | 39.2 |
| Mombasa | 37.6 |
| Tharaka Nithi | 36.9 |
| Siaya | 35.6 |
| Narok | 33.7 |
| Nyeri | 32.4 |
| Muranga | 30.7 |
| Lamu | 30.6 |
| Meru | 27.5 |
| Kirinyaga | 25.6 |
| Kiambu | 25.4 |
| Nairobi | 22.0 |
| Kajiado | 12.1 |