Interesting source. Thank you very much! Although, again the healthcare professional sector tends to always to be the worst hit by immigration in developing countries (as hospitals in developed countries continuously need more doctors). Also, interestingly enough, I see the study says emigration of doctors from SA has declined six-fold between 1991 and 2017. Also, it says SA doctors also registered in foreign countries has fallen from 33.5% in 2005 to 21.6% in 2017. That's positive I would say, and I also think the article is trying to paint a more positive picture than what you're implying the article is stating.
I can't access the full article. Do you have by any have the full version? The article says that 31.5% of doctors have returned, but it has a very broad period: 1991-2017. For us that lived in the 90s know that many people that left in that decade left for very different reasons than those that are leaving today. So I wouldn't be surprised if many of those doctors would never return. I would like to see if the article mentions how many doctors that left after 2000 have returned.
Also, do you have any sources for other sectors? Or for general emigration figures?