There's now an index tracking African stocks. The most interesting part of this article is that Africa is increasing exports to China.
I can't find any member list for the index, though this offers an exciting -- and almost certainly fictional -- datum:
The continent has consistently had equity markets that have delivered significant dollar returns. These are typically in excess of 100% per annum, as highlighted in our recent report, Africa 1.01 - Unlocking Investment Potential. This stellar performance has, to a large extent, passed unnoticed. But recent, high-profile IPO's, especially in Nigeria have led to a significant increase in investor appetite.