Proportion of the population using improved drinking water sources, Over time improvement.

[Not e: Some nations will disapear but that is because there is no data.] Knowing that the Taliban were over thrown in 2001 what connections could you make with that and the development of afghanistan? Papua New Guinea did not improve that much, knowing that Papua New Guinea is mainly rual,secluded and tribal, would you think it was one of the 15 worst for the same reason Afghanistan was and those that have to do with there slow growth?