| Activity | 1980 | 1985 | 1990 | 1995 | 2000 | 2005 | 2010 |
| Agriculture | 20.6 | 32.7 | 31.5 | 34.9 | 35.8 | 41.2 | 41.8 |
| Manufacturing | 11.0 | 6.0 | 5.5 | 4.9 | 4.2 | 3.8 | 4.3 |
| Oil & Mining | 23.6 | 36.3 | 37.7 | 33.5 | 32.7 | 24.5 | 14.8 |
| Wholesale and Retail Trade | 20.0 | 13.9 | 13.4 | 14.0 | 13.1 | 13.8 | 19.0 |
| Building and Construction | 9.7 | 1.6 | 1.6 | 1.9 | 2.0 | 1.5 | 2.0 |
| Infrastructure | 4.3 | 3.7 | 2.6 | 2.8 | 2.8 | 7.7 | 10.2 |
| Services | 10.7 | 5.7 | 7.7 | 8.7 | 9.3 | 7.5 | 7.9 |
| Total | 99.9 | 99.9 | 100.0 | 100.0 | 99.9 | 100.0 | 100.0 |
| Overall GDP Growth Rate | 5.3 | 9.5 | 13.0 | 2.2 | 5.4 | 6.5 | 5.6 |