| 2000 | 2012 | |
|---|---|---|
| Viet Nam | 33.0 | 25.0 |
| Republic of Korea | 7.0 | 8.0 |
| Thailand | 38.0 | 22.0 |
| Brunei Darussalam | 15.0 | 12.0 |
| Singapore | 12.0 | 15.0 |
| Philippines | 47.0 | 34.0 |
| China | 22.0 | 11.0 |
| Japan | 9.0 | 10.0 |
| Lao People's Democratic Republic | 65.0 | 60.0 |
| Indonesia | 46.0 | 36.0 |
| Myanmar | 56.0 | 42.0 |
| Malaysia | 22.0 | 20.0 |
| Cambodia | 66.0 | 48.0 |