Approximately 90.5% of Suriname is covered by tropical rain forest, but existing forest resources have scarcely been touched. Initial exploitation has been confined to the more accessible strips along the riverbanks. The Suriname Forestry Service, under an FAO technical assistance program, has undertaken to survey and open up the forests for commercial use. Roundwood production was about 227,000 cu m (8 million cu ft) in 2000. In August 1992, a peace agreement between the central government and insurgent groups from the interior (where timber is found) was signed. Since the fighting ended, logging has increased. The trade surplus in forest products was $1.8 million for 2000.