| 1999 | |
|---|---|
| West Pokot | 54.7 |
| Samburu | 52.1 |
| Narok | 51.1 |
| Homa Bay | 50.8 |
| Migori | 50.5 |
| Baringo | 50.0 |
| Mandera | 49.3 |
| Bomet | 48.8 |
| Taita Taveta | 48.4 |
| Kwale | 48.3 |
| Garissa | 47.7 |
| Wajir | 47.7 |
| Busia | 47.5 |
| Kilifi | 46.6 |
| Bungoma | 46.6 |
| Kitui | 45.6 |
| Trans Nzoia | 45.1 |
| Marsabit | 44.8 |
| Nandi | 44.3 |
| Turkana | 44.3 |
| Kakamega | 44.0 |
| Isiolo | 43.8 |
| Kisumu | 43.5 |
| Kericho | 43.2 |
| Siaya | 42.7 |
| Uasin Gishu | 42.2 |
| Makueni | 41.6 |
| Kajiado | 40.9 |
| Nakuru | 40.9 |
| Nyandarua | 39.4 |
| Laikipia | 39.4 |
| Machakos | 38.5 |
| Vihiga | 37.6 |
| Lamu | 36.9 |
| Tana River | 36.1 |
| Mombasa | 35.1 |
| Embu | 32.8 |
| Kiambu | 32.7 |
| Nairobi | 32.0 |
| Muranga | 30.4 |
| Kirinyaga | 30.3 |
| Nyeri | 29.4 |