In an article published in March, economists William Easterly and Yaw Nyarko noted that in Sub-Saharan Africa, remittances (money sent by immigrants abroad back to their home countries) on average amounted to 81 percent of the foreign aid received by an individual country. 
Katika makala iliyochapishwa mwezi Machi, wachumi William Easterly na Yaw Nyarko wanaeleza kwamba katika nchi zilizo chini ya Jangwa la Sahara, kiasi cha fedha kinachotumwa na wahamiaji wanaotoka bara hilo ni wastani wa asilimia 81 ya misaada ya fedha kutoka nchi za kigeni kwa kila nchi.