I am an educator at an international development NGO, seeking information for an activity trying to communicate to high-school and college students about global income inequality. I am looking for up to date statistics on global income distribution (per capita). Most of what I have found has been country break downs (i.e. per capita income in Algeria is X) but I'm looking for - top 10% in the world earn X, next 10% earn Y, etc. Any ideas? Many many thanks