[prmph]

> How much have been poured in?

Nothing. Do you actually think vast sums have been poured into Africa, with the objective of helping its development? If so, I'd like to disabuse you of that notion.

Actually, development aid to Africa (a drop in the ocean compared to what the US sends to Israel, or spent on the Iraq/Afghan war each week, for instance) is intended to hinder its development, by propping up the donor countries industries at the expense of local industry, or by supporting rulers who tow the western line.

I cannot go into all the reasons why/how this is the case, but all the information is out there if you search for it.