Precise numbers for the difficulty levels?

[Epaminondas]

A straightforward arithmetic question: What kind of boosts does the AI get with each difficulty levels in precise numbers?

Thanks in advance.

[PhilD]

I don't have any numbers (and I don't think they are in the manual; I read it precisely enough, I think I'd have noticed), but on Impossible level, I find that the AI gets to field pretty large armies - at least on maps where it gets time to develop.