Scoring: Mauritius

• Date of joining: 1968-04-24
• Expected count from Wikipedia (Sir Seewoosagur Ramgoolam onwards): 8
• Number in Wikidata: 6
• PositionHolderHistory warnings: 4
• Score: 52/80 = 65%

As with a few other countries there were several distinct entities during the relevant period (the Commonwealth of Mauritius until 1992), but the office of Prime Minister currently spans both.