I give it maybe 30 years. Certainly within a half century. At that time, muslims will overwhelm ethnic swedes by a large margin in sheer numbers. A coup or steady infiltration will eventually install a muslim in power, who will seal the borders, establish an islamic dictatorship, and commence to mass murder any remaining ethnic swedes. The remaining western societies will be powerless to do anything. And it will establish a pattern. All that beautiful land, forests as far as the eye can see, pristine coastlines... will all be 100% muslim without any pesky swedes. It’s gonna happen folks without divine intervention.
Well, there will still be Swedes. They will be blonde Muslims - the females in full black burkas.