Turkey has at least two ... porous ... borders that I've seen in action, so I am doubtful that counting births and immigration visas can provide an accurate real-time count of every person in the country.
I think the border to Syria was at one point fairly porous, for humanitarian reasons, but as of now even that is sealed shut pretty tightly. It's actually third largest border wall in the world after Great Wall of China and US - Mexico one. [0]
I think the border to Syria was at one point fairly porous, for humanitarian reasons, but as of now even that is sealed shut pretty tightly. It's actually third largest border wall in the world after Great Wall of China and US - Mexico one. [0]
[0] https://en.wikipedia.org/wiki/Syria–Turkey_barrier