2nd most common origin of Emperors

[guy]

I always knew that the Roman province of Illyricum was the origin of many Emperors, especially during the Crisis of the Third Century.

(The Roman province of Illyricum included Serbia, but also parts of today’s Albania, Kosovo, Montenegro, Bosnia and Herzegovina, Croatia, and Slovenia.)
 

I was surprised to learn more specifically that modern-day Serbia was the second most common origin of all Emperors. Italy, of course, was the most common origin. (Thanks MM@Milosevic for this factoid.)