Is it possible that now almost eight percent of Haiti's population consists of orphaned children? Reliable data are hard to come by but this one estimate suggests it might be true. (Current living population is maybe 9.5 million (?), with the number of orphans estimated at 750,000.) It is also the case that the Haitian government seems reluctant to let these children be adopted abroad, in part because it is difficult to tell which children are truly orphaned.
Addendum: Here is one estimate.