Scoring: The Gambia

• Date of joining: 1965-09-21
• Expected count from Wikipedia (Sir Dawda Jawara onwards): 4 + 1 period as Prime Minister
• Number in Wikidata: 3
• PositionHolderHistory warnings: 0
• Score: 30/50 = 60%

The “office held by head of government” does not currently include the Prime Minister.