Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Tunis:

"

After World War II, suburbs began to rapidly spring up on the outskirts of Tunis. These form a large percentage of the population of the Tunis metropolitan area. It grew from 27% of the total population in 1956, to 37% in 1975 and 50% in 2006.[citation needed]