Wow, you are right. Slovenia totally escaped me. For some reason I don't associate Slovenia with Yugoslavia. In my mind it was always it's own thing. Maybe there was less fighting during the dissolution and we didn't hear as much in the news.
Its war for independence is called Ten-Day War and it had <100 casualties. Still not as good as Macedonia's independence (0 casualties), but not comparable to Croatia or Bosnia neither.
There was basicly zero fighting. And slovenia was already before the breakup the richest state of yugoslavia