World  $ 65,000,000,000,000 (Trillion)
 July 2006 est.
1
 United States
 $ 12,980,000,000,000 (Trillion)
 July 2006 est.
2
 China $ 10,000,000,000,000 (Trillion)
July 2006 est.
3
 Japan
 $ 4,220,000,000,000 (Trillion)
 July 2006 est.
4
 India
 $ 4,042,000,000,000 (Trillion)
 July 2006 est.
5
 Germany
 $ 2,585,000,000,000 (Trillion)
 July 2006 est.
6
 United Kingdom
 $ 1,903,000,000,000 (Trillion)
 July 2006 est.
7
 France
$ 1,871,000,000,000 (Trillion)
 July 2006 est.
8
 Italy
 $ 1,727,000,000,000 (Trillion)
 July 2006 est.
9
 Russia
 $ 1,723,000,000,000 (Trillion)
 July 2006 est.
10
 Brazil
 $ 1,616,000,000,000 (Trillion)
 July 2006 est.

Click on the nation links to access all kinds of information about each country (and the world).

-If you do the math here you will find that the United States controls 20% of the worlds economy! (With only  4.5% of the worlds population)

-If you do more math here you will find that the US and China comprise 35% of the world economy (which makes more sense, since they account for 25% of the worlds population - [US = 4.5% and China = 20% of population])