History
| 1982 | Canada, France, Germany, Italy, Japan, UK, USA, EC |
|
| 2007 | Brazil, Mexico, Chinese Taipei, South Africa, Australia, Korea, India |
|
| 2013 | China |
|
| Presently | Russia is considering joining |
| 1982 | Canada, France, Germany, Italy, Japan, UK, USA, EC |
|
| 2007 | Brazil, Mexico, Chinese Taipei, South Africa, Australia, Korea, India |
|
| 2013 | China |
|
| Presently | Russia is considering joining |