| Years | 1978 | 1979 | 1980 | 1987 | 1988 | 1989 | 2003 | 2004 | 2005 |
| Agriculture | 11% | 10% | 11% | 33% | 28% | 34% | 46% | 52% | 52% |
| Rubber | 6% | 5% | 6% | 7% | 5% | 7% | 11% | 20% | 21% |
| Coffee and cocoa | -/- | -/- | -/- | 1% | 1% | 1% | 0% | 0% | 0% |
| Rice | 0% | 0% | 0% | 10% | 9% | 10% | 6% | 5% | 6% |
| Cassava | 0% | 0% | 0% | 5% | 4% | 5% | 10% | 8% | 8% |
| Other | 5% | 5% | 5% | 11% | 9% | 11% | 19% | 18% | 17% |
| Services | 50% | 49% | 45% | 46% | 46% | 47% | 26% | 24% | 24% |
| Government services | 10% | 10% | 11% | -/- | -/- | -/- | 3% | 3% | 3% |