Very interesting blog, as always. I wonder what the same data is for Africa specifically - what percentage of Africans have a cell phone, and what percentage have access to a clean toilet. Even more stark? Possibly. I also wonder what the logical policy conclusion is. Perhaps it is that private providers could do much more in Africa, if only the government would let them - and if the WB would support this. Toilets are (a) divisible and (b) excludable, so are not a public good. There are externalities of course (defecating in a ditch causes disease for the whole village), which could argue for some kind of public subsidy. Africa is failing to meet the IDTs, and its performance vs. Asia (for example) is terrible. Time for some radical solutions to issues such as toilet provision?