employment in Saudi maybe gets smoothed out
many-foreign-workers-are-leaving-saudi-arabia
From the article 9 million foreign workers in SA.
Population of SA ~30 million,014 years 27.6%
65 and over 3.2%. https://en.wikipedia.org/wiki/Demographics_of_Saudi_Arabia
10MM too young/ too old, <20MM possible workforce, not many female workers.
The total number of foreign workers may equal the Saudi workers.