In 1980, average income in the US was a little more than three times that of Mexico, the gap between Singapore and Indonesia was 5.3 to one, and the difference between Spain and Morocco 3.5 to one.
En 1980, el ingreso promedio en Estados Unidos era un poco más que tres veces el de México, la brecha entre Singapur e Indonesia era de 5,3 a uno y la diferencia entre España y Marruecos, de 3,5 a uno.