Aux Etats-Unis, la classe moyenne diminue parce qu'elle... s'enrichit :
The share of households with a middle-class income between $35,000 and $75,000 shrank from 33.8 to 32.8 percent. But it´s not because they become poorer, it´s because they become richer (...). On the contrary, the share of households making less than $35,000 was reduced even more, from 39.6 to 36.7 percent. It´s the share of households making more than $75,000 that is growing, from 26.5 to 30.4 percent.L'expansion du commerce international a été un facteur déterminant dans cette évolution.
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