This is already happening in the United States, where exports are above their previous peak while imports remain subdued; the current-account deficit is declining; and even net employment in the tradable sector is increasing (for the first time in two decades). Indeed, recent data suggest that more than half of the acceleration in US growth is occurring on the tradable side, even though it accounts for only about one-third of the economy.
在美国，这一幕正在发生，出口已高于前期峰值，而进口仍然受到抑制；经常项目赤字在减少；甚至可贸易部门的净就业也在增加（为二十年来首次）。事实上，最新数据表明美国增长加速的一大半来自可贸易部门，尽管该部门仅占经济的三分之一。而可贸易部门的贡献可能仍被低估了，因为可贸易供给面形成的收入产生了成为不可贸易部门需求的收入，从而形成了跨越可贸易/不可贸易界线的乘数效应。