text: Ngo-2015, ngokwesibonelo, kwakunabahlengikazi abawu-7.9 kanye nodokotela abawu-2.6 kubantu abangu-1 000 baseMelika, uma kuqhathaniswa nesilinganiso se-OECD sabahlengikazi abangu-9.9 nodokotela abangu-3.2.