There are few, Spain's King Juan Carlos I being crowned king after Francisco Franco's death, and Chile's Pinochet leaving power after the 1988 referendum for example.

If 15 years of dictatorship is one of the few positive examples, that is not a good sign.

Well how many examples have there been anyway? Maybe six, under a range of definitions? Besides, historicism (inevitabilism) is wrong.

I agree, and I wish I was able to delete the post. I thought afterwards the question itself is a little poor taste.

Portugal https://en.wikipedia.org/wiki/Carnation_Revolution

I think Spain transitioned from fascist dictatorship to democracy relatively peacefully.