...by Purchasing Power Parity.............in USD
World $ 65,000,000,000,000 2006 est.
European Union $ 12,820,000,000,000 2006 est.
1United States $ 12,980,000,000,000 2006 est.
2 China $ 10,000,000,000,000 2006 est.
3 Japan $ 4,220,000,000,000 2006 est.
4 India $ 4,042,000,000,000 2006 est.
5 Germany $ 2,585,000,000,000 2006 est.
6 United Kingdom $ 1,903,000,000,000 2006 est.
7 France $ 1,871,000,000,000 2006 est.
8 Italy $ 1,727,000,000,000 2006 est.
9 Russia $ 1,723,000,000,000 2006 est.
10 Brazil $ 1,616,000,000,000 2006 est.
source- CIA fact book