"I don't have great numbers on that. It's pretty hard to get accurate census data. One thing I do notice is that daeva don't look quite like humans - they don't cluster ethnically the same way. You get blue eyes and brown skin and red hair on the same daeva just about as often as you get a trifecta of brown, where in humans you need exciting ancestry for that. So, if I assume that a representative population of daeva live in the city where I live and that this phenomenon is real and not a matter of deliberate cosmetic choices, I think I may well have never seen another ex-human in Hell in person, not enough to be sure that they weren't just normal-looking by happenstance - that there's thousands of natural daeva for every one that died. And the post office folks say if you want to talk to someone who's probably dead you just send their mail to Limbo, so if there's much like me going on it's not enough to affect the postal system."