Economics focus

摘要

As the dollar hit another new low against the euro, briefly breaching $1,30 on November loth, an increasing number of economists are asking how far the greenback might fall and how its slide will affect the world economy. One of the most alarming answers comes from Paul Volcker, Alan Greenspan's immediate predecessor as chairman of the Federal Reserve. He recently said that he thought there was a 75% chance of a currency crisis in the United States within five years. It is easy to see how this might happen. America's current-account deficit is running at a record 6% of GDP this year, and on existing policies it will continue to widen. America's net foreign liabilities are already 23% of GDP, and economists at Goldman Sachs calculate that this figure will reach more than 60% by 2020, even if the current-account deficit stabilises at 5% of GDP (see chart). Other countries, such as Australia and New Zealand, have sustained large external deficits for long periods, but America's borrowing is much bigger in absolute terms.