The American economy is now No. 2

...in terms of GDP, when compared to the Eurozone.

PARIS (Reuters) - The U.S. economy lost the title of "world's biggest" to the euro zone this week as the value of the dollar slumped in currency markets.

Taking the gross domestic product of both economies in 2007, the combined GDP of the 15 countries which use the euro overtook that of the United States when the European currency surged to a record high of more than $1.56 per euro.

"The curious outcome of breaching this latest milestone is that the size of the euro zone's annual output has now exceeded that of the U.S.," the economics department of Goldman Sachs, the Wall Street investment bank, said in a note to clients.

Taking official estimates of 2007 GDP -- $13,843,800 billion for the United States and 8,847,889.1 billion euros for the euro zone -- the economy of the latter passed the United States once converted into dollars, shortly after the euro topped $1.56.

Blame the falling dollar, if you must, but remember the dollar's fall is only a recognition of more deep-seated problems.