from WaPo:
Haiti has approximately 9 million citizens, and 1 million to 2 million Haitians live outside their country. According to the U.S. Census Bureau, half a million people born in Haiti live in the United States, and estimates put several hundred thousand in Canada and as many as 100,000 in France. Those migrants send home $1.9 billion in remittances -- double the official aid flows and equal to 30 percent of Haiti's gross domestic product.
These sums are greatly exceeded by some of Haiti's neighbors. The 1.3 million Dominicans living in the United States send home $3 billion in remittances, an amount 20 times as much as official aid flows. A million Hondurans living abroad send home $2.7 billion, providing eight times the global foreign aid Honduras receives. The 1.5 million Salvadorans living here send home $3.8 billion, 15 times official aid flows.
A larger Haitian diaspora would be a far better base for the country's economic future than aid pledges that may or may not be met. If several hundred thousand more Haitians were able to migrate, those Dominican, Honduran or Salvadoran numbers suggest that remittances to Haiti would give its economy a huge and continuing jolt.