| 2006 | |
|---|---|
| Lamu | 63.3 |
| Tana River | 63.3 |
| Migori | 63.0 |
| West Pokot | 60.4 |
| Homa Bay | 58.3 |
| Narok | 55.8 |
| Turkana | 55.4 |
| Wajir | 54.8 |
| Siaya | 54.4 |
| Kericho | 51.6 |
| Makueni | 51.1 |
| Nandi | 50.9 |
| Kitui | 50.5 |
| Kisii | 49.0 |
| Taita Taveta | 48.8 |
| Mombasa | 48.0 |
| Garissa | 46.6 |
| Kisumu | 45.6 |
| Kilifi | 45.4 |
| Marsabit | 44.0 |
| Uasin Gishu | 43.4 |
| Kirinyaga | 43.2 |
| Busia | 42.8 |
| Meru | 42.6 |
| Machakos | 40.9 |
| Embu | 39.8 |
| Bomet | 39.5 |
| Nyamira | 38.9 |
| Kakamega | 37.9 |
| Nairobi | 37.7 |
| Kwale | 37.7 |
| Bungoma | 37.6 |
| Samburu | 37.1 |
| Muranga | 36.2 |
| Mandera | 35.2 |
| Trans Nzoia | 34.8 |
| Tharaka Nithi | 33.8 |
| Isiolo | 33.7 |
| Vihiga | 33.4 |
| Kiambu | 22.8 |
| Baringo | 14.9 |
| Laikipia | 14.9 |
| Nyandarua | 14.4 |
| Nyeri | 13.4 |
| Kajiado | 12.3 |
| Elgeyo Marakwet | 9.4 |
| Nakuru | 0.0 |