since 2019, 600 000 Lebanese citizens have left the country

https://www.nidaalwatan.com/article/308394-%D8%AA%D8%B9%D8%AF%D8%AF%D8%AA-%D8%A3%D8%B3%D8%A8%D8%A7%D8%A8-%D9%87%D8%AC%D8%B1%D8%A9-%D8%A7%D9%84%D9%84%D8%A8%D9%86%D8%A7%D9%86%D9%8A%D9%8A%D9%86-%D9%88%D8%A7%D9%84%D9%86%D8%AA%D9%8A%D8%AC%D8%A9-%D9%86%D9%82%D9%85%D8%A9

It is actually crazy how big that number is. According to my vague calculations this would put the number of over-21 Lebanese living IN lebanon at around 3 million, if not less.

Which also means that syrian refugees+palestinian refugees make up nearly as much as the entire Lebanese population.