As of year 2004, the top-15 emitters of CO2 were:

 

1)     United States

 

2)     China

 

3)     EU-25

 

4)     Indonesia

 

5)     Brazil

 

6)     Russian Federation

 

7)     Japan

 

8)     India

 

9)     Canada

 

10)  Malaysia

 

11)  South Korea

 

12)  Mexico

 

13)  Iran

 

14)  Australia

 

15)  South Africa

 

 

Together, these countries accounted for 73% of global CO2 emissions.

 

 

See Data Sources (emissions) for more information.