Puerto Rico lost its self-sufficiency in timber production by the mid-19th century, as population expansion, increasing demand for food, and extraction of native and endemic woods for export led to massive deforestation. Today, Puerto Rico must import nearly all of its wood and paper products. The public forest system covers 86,095 acres (34,842 hectares), of which 58,249 acres (23,573 hectares) are part of the Puerto Rico State Forest system and 27,846 acres (11,269 hectares) are part of the Caribbean National Forest.