Subject
- Airfields36
- International relations36
- Customs administration35
- Education35
- Land ownership35
- Political affairs35
- Postal services32
- Military operations30
- Petroleum products30
- Motor vehicles29
- Visits28
- Coffee26
- Slavery26
- Cars25
- Foreign relations25
- Harbours25
- Tribes24
- Armed forces23
- Date Gardens23
- Embassies and consulates23