A study of slave shipping records shows that over 3,300 slaves were exported every year from northern routes from Ethiopia, while over 4,200 slaves exported annually from southern routes.
一個對於奴隸運輸的研究指出，每年從衣索比亞北部出口的奴隸每年出口超過3300人，而南部每年出口4200多位奴隸。