I think you're missing the point.
Slavery is an old thing[0]. Even assuming the death rates are correct, one can't honestly conclude that what happened in the West in the past 500 years is similar to what happened, say, in Antiquity in the West[1] - and that's what most relevant to Aristotle - or amongst ancient Jews[2].
I know that there are too many unknowns for me to even have a clear thesis to begin with.
[0]: https://en.wikipedia.org/wiki/Slavery#History