 The 2013 list featured 138 women, of which 50 came from the United States.A majority of the list (961 individuals, 67 percent) were entirely self-made; 184 (13 percent) inherited their wealth, and 281 (20 percent) achieved their fortune through a combination of inheritance and business acumen.Vietnam's Phạm Nhật Vượng was the first person from that country to be included in this list.