The growing external deficit appears to be structural: since 1990, US exports of goods and services have been growing at 5.7 per cent a year, in constant prices, while imports have been growing at 8.8 per cent.

• 对外赤字增长似乎是结构性的：自从1990年以来，用不变价来衡量，美国产品和劳务出口每年增长5.；7%25，而进口增长8