These figures are measured using purchasing power parity, which takes into account the standard of living of each country. This provides a more fair and relevant measure of GDP.
However, the U.S. still has the largest economy of any single country. The next largest is China, at $7 trillion, followed by Japan at $4 trillion. The largest single EU country is Germany, at $2.8 trillion, which has been surpassed by India, whose GDP was $2.965 trillion in 2007.
What It Means to You:
The EU now has an economy of scale that eats into the comparative advantage the U.S. has traditionally enjoyed. Furthermore, the EU's currency, the euro, is now competing with the dollar as a global currency. Thanks to these competitive pressures, a U.S. recession could be the precursor to a lower standard of living that may not return to previous, stronger levels.

