| Country | Year Joined |
|---|---|
| Australia | 1989 |
| Brunei Darussalam | 1989 |
| Canada | 1989 |
| Chile | 1994 |
| China, P.R. | 1991 |
| Hong Kong, China | 1991 |
| Indonesia | 1989 |
| Japan | 1989 |
| Korea, ROC | 1989 |
| Malaysia | 1989 |
| Mexico | 1993 |
| New Zealand | 1989 |
| Papua New Guinea | 1993 |
| Peru | 1998 |
| Philippines | 1989 |
| Russia | 1998 |
| Singapore | 1989 |
| Taipei, Chinese | 1991 |
| Thailand | 1989 |
| United States | 1989 |
| Viet Nam | 1998 |