deposits of gold, copper, coal, natural gas, limestone, marble, and asbestos. The island is 55% forest and woodland (mostly on the mountains) and 24% arable land (mostly on the plains), with 15% going to other purposes. 5% is permanent pasture and 1% is permanent crops. Because of the intensive exploitation throughout Taiwan's pre-modern and modern history, the island's mineral resources (e.g. coal, gold, marble), as well as wild animal reserves (e.g. deer), have been virtually exhausted. Moreover, much of Taiwan's forestry resources, especially firs were harvested during Japanese rule for the construction of shrines and have only recovered slightly since then. To this day, forests do not contribute to significant timber production mainly because of concerns about production costs and environmental regulations. Agriculture The few natural resources with significant economic value remaining in Taiwan are essentially agriculture-associated. Sugarcane and rice have been cultivated in western Taiwan since the 17th century. Camphor extraction and sugar refining played an important role in Taiwan's exports from the late 19th century through the first half of the 20th century. The importance of these industries subsequently declined mainly due to the reduction of international demand rather than exhaustion of related natural resources. Domestic agriculture (rice being the dominant kind of crop) and fisheries retain some importance, but they have been greatly challenged by foreign imports since Taiwan's accession to the World Trade Organization in 2002. Consequently, upon the decline of subsistence, Taiwan's agriculture now relies heavily on the marketing and export of specialty crops, such as bananas, guavas, lychees, bell fruits, and high-mountain tea. Energy resources Taiwan has significant coal deposits and some insignificant petroleum and natural gas deposits. , oil accounts for 49.0% of the total energy consumption. Coal comes next with 32.1%, followed by nuclear energy with 8.3%, natural gas (indigenous and liquefied) with 10.2%, and energy from renewable sources with 0.5%. Taiwan has six nuclear reactors and two under construction. Nearly all oil and gas for transportation and power needs must be imported, making Taiwan particularly sensitive to fluctuations in energy prices. Taiwan is rich in wind energy resources, with wind farms both onshore and offshore, though limited land area favors offshore wind resources. By promoting renewable energy, Taiwan's government hopes to also aid the nascent renewable energy manufacturing industry, and develop it into an export market. Human geography Taiwan has a population of over 23 million, the vast majority of whom