I was unable to find almost any mentions in the news, and data itself was even more impossible to find.
The Ithaca Journal
1977 Apr 05
A census last year showed the autonomous region here, which encompasses three cities — this one, Sulaimaniya and Dohok — has 1¼ million people, which would mean about a tenth of Iraq’s population. There is no plan to open the region to Kurds from other nations.