. >> no one oversees the work of aid groups, a situation henry ochido finds frustrating. all aid organizations in kenya are supposed to register with him. he has a list of more than nine thousand groups. whether they actually do any good is something ochido and his staff of just 21 can't determine. and kenya's government is not really interested in knowing. >> if you compare the aid industries with the other key sectors that generate revenue, that generate foreign exchange for this country like horticulture, for instance, and tourism, you'll find that they're fairly close together. they're comparable. in certain years, i mean it's possible that the aid industry could actually be bringing in more money. >> around a billion euros in aid money flows into kenya year after year. the business of misery is flourishing. and the worse the misery, so much the better. kibera is said to be africa's biggest slum and home to a million. but figures from a census conducted in 2009 counter that claim. it concluded that only 194,000 people lived in kibera. >> and even in 1999 it was alread