| 1999 | |
|---|---|
| Wajir | 9.60 |
| Garissa | 7.00 |
| Mandera | 7.00 |
| Nairobi | 4.80 |
| Kajiado | 4.50 |
| Bungoma | 4.30 |
| Kakamega | 4.10 |
| Laikipia | 3.90 |
| Trans Nzoia | 3.80 |
| Mombasa | 3.60 |
| Isiolo | 3.60 |
| Tana River | 3.40 |
| Nakuru | 3.40 |
| Busia | 3.40 |
| Nyandarua | 3.30 |
| Narok | 3.30 |
| Turkana | 3.30 |
| Uasin Gishu | 3.30 |
| Vihiga | 3.30 |
| Kilifi | 3.10 |
| Migori | 3.10 |
| West Pokot | 3.10 |
| Nandi | 2.90 |
| Marsabit | 2.80 |
| Machakos | 2.80 |
| Samburu | 2.80 |
| Homa Bay | 2.70 |
| Baringo | 2.70 |
| Bomet | 2.70 |
| Kwale | 2.60 |
| Lamu | 2.50 |
| Kericho | 2.40 |
| Kitui | 2.20 |
| Kisumu | 2.00 |
| Kiambu | 1.80 |
| Taita Taveta | 1.70 |
| Embu | 1.70 |
| Kirinyaga | 1.50 |
| Siaya | 0.90 |
| Nyeri | 0.80 |
| Muranga | 0.20 |