Population in Saudi !

In fact, in saudi we dont have any problem with population but we might have problem just with the non saudis because alot of them come to saudi for religoin porpuse and then they work in Saudi illegaly. Therefore, the total number of population of the Kingdom of Saudi Arabia is 27,136,977 people, and the number of Saudi citizens is 18,707,576 people, while  the number of residents in the Kingdom of Saudi Arabia is 8,429,401 people. therefore , we dont know in the futre what's going to happen it mught me a problem for us !