Certainly a lot of the discrepancy is attributable to valuation effects: since 1982, the dollar value of overseas assets has increased repeatedly, owing to increases in the dollar value of foreign currency and increases in the assets’ foreign-currency value. But part of the discrepancy also reflects the discovery of missing assets, some of which may have originated in the reinvestment of overseas income.
显然，这一差异中的很大一部分可以归因于估值效应：1982年以来，海外资产的美元价值一再上升，原因在于外币美元价值的升高和资产外币价值的升高。但是这一差异中的一部分也反映了遗漏资产的发现，其中一些可能源于海外所得再投资。