of Futuna; the virtually uninhabited island of Alofi; and 20 uninhabited islets. The total area of the territory is , with of coastline. The highest point in the territory is Mont Puke, on the island of Futuna, at . The islands have a hot, rainy season from November to April, when tropical cyclones passing over them cause storms. Then they have a cool, dry season from May to October, caused by the southeast trade winds that predominate during those months. The average annual rainfall is between 2,500 and 3,000 millimetres (98–118 in), and rain is likely on at least 260 days per year. The average humidity is 80%. The average annual temperature is , rarely falling below ; during the rainy season, it ranges between and . Only 5% of the islands' land area consists of arable land; permanent crops cover another 20%. Deforestation is a serious problem: Only small portions of the original forests remain, largely because the inhabitants use wood as their main fuel source, and, as a result, the mountainous terrain of Futuna is particularly susceptible to erosion. The island of Alofi lacks natural freshwater resources, so it has no permanent settlements. Volcanic activity during the mid-Pleistocene created numerous volcanic crater lakes on Uvea (Wallis Island). The names of some of them are: Lalolalo, Lano, Lanutavake, Lanutuli, Lanumaha, Kikila, and Alofivai. Wallis and Futuna is part of the Fiji tropical moist forests terrestrial ecoregion. Islands Flora and fauna Economy The GDP of Wallis and Futuna in 2005 was US$188 million (at market exchange rates). The territory's economy consists mostly of traditional subsistence agriculture, with about 80% of the labor force earning its livelihood from agriculture (coconuts and vegetables), livestock (mostly pigs), and fishing. About 4% of the population is employed in government. Additional revenue comes from French government subsidies, licensing of fishing rights to Japan and South Korea, import taxes, and remittances from expatriate workers in New Caledonia, French Polynesia, and France. Industries include copra, handicrafts, fishing, and lumber. Agricultural products include coconuts, breadfruit, yams, taro, bananas, pigs, and fish. Exports include copra, chemicals, and fish. There is a single bank in the territory, Banque de Wallis-et-Futuna, established in 1991. It is a subsidiary of BNP Paribas. There had previously been a branch of Banque Indosuez at Mata Utu. It had opened in 1977, but was closed in 1989, leaving the territory without any bank for two