| 2009 | |
|---|---|
| Samburu | 28.3 |
| Kilifi | 23.9 |
| Kwale | 21.9 |
| Lamu | 21.6 |
| Isiolo | 21.3 |
| West Pokot | 20.6 |
| Kisumu | 20.5 |
| Migori | 20.0 |
| Mombasa | 19.8 |
| Kajiado | 19.2 |
| Nandi | 19.2 |
| Nakuru | 18.2 |
| Laikipia | 18.1 |
| Narok | 18.0 |
| Turkana | 17.6 |
| Baringo | 17.5 |
| Siaya | 17.4 |
| Marsabit | 16.7 |
| Uasin Gishu | 16.7 |
| Trans Nzoia | 16.4 |
| Busia | 16.4 |
| Kiambu | 16.3 |
| Nyandarua | 16.1 |
| Nairobi | 16.0 |
| Taita Taveta | 16.0 |
| Tana River | 16.0 |
| Nyamira | 16.0 |
| Kakamega | 15.9 |
| Elgeyo Marakwet | 15.8 |
| Kisii | 15.7 |
| Kericho | 15.4 |
| Bungoma | 14.5 |
| Nyeri | 14.3 |
| Bomet | 14.1 |
| Vihiga | 14.0 |
| Kitui | 13.1 |
| Meru | 12.6 |
| Kirinyaga | 12.5 |
| Tharaka Nithi | 12.3 |
| Machakos | 12.1 |
| Makueni | 10.5 |
| Muranga | 10.1 |
| Embu | 9.9 |
| Garissa | 5.9 |
| Wajir | 3.6 |
| Mandera | 3.1 |