Forested lands cover about 510,000 hectares (1,260,000 acres), a large proportion of which was state owned. The oak and pine forests of the northern highlands provide cork for export (some 7,500 tons produced annually) and firewood for local use. Estimated forestry output in 2000 included wood for fuel, 2,094,000 cu m (73.9 million cu ft); wood-based panels, 104,000 cu m (3.67 million cu ft); paper and paperboard, 94,000 tons; and sawn wood, 20,000 cu m (706,000 cu ft).