Agriculture and fishing cultivation in western
Yemen near
At Tawilah Agriculture is the mainstay of Yemen's economy, which has generated more than 20 percent of the country's gross domestic product (GDP) since 1990 (20.4 percent in 2005 according to the
Central Bank of Yemen). Agriculture employs more than half (54.2 percent in 2003) of the working Yemeni population. However, a
U.S. government estimate suggests that the sector accounted for only 13.5 percent of GDP in 2005. Numerous
environmental problems hamper growth in this sector — soil erosion, sand dune encroachment, and
deforestation — but the biggest problem by far is the scarcity of water. As a result of low levels of rainfall, agriculture in Yemen relies heavily on the extraction of groundwater, a resource that is being depleted. Yemen's water tables are falling by approximately two meters per year; it is estimated that Sanaa's groundwater supplies could be exhausted by 2030. The use of
irrigation has made fruit and vegetables Yemen's primary cash crops. With the rise in the output of irrigated crops, the production of traditional rain-fed crops such as cereals has declined. According to the Central Bank of Yemen, the production of
khat, a mildly narcotic and heavily cultivated plant that produces natural stimulants when its leaves are chewed, rose 6.7 percent in 2005 and accounted for 5.8 percent of GDP; the consumption of khat is widespread in Yemen. According to
the World Bank and other economists, cultivation of this plant plays a dominant role in Yemen's agricultural economy, constituting 10 percent of GDP and employing an estimated 150,000 persons while consuming an estimated 30 percent of irrigation water and displacing land areas that could otherwise be used for exportable coffee, fruits, and vegetables. The
World Bank predicted that Yemen's oil and gas revenues would plummet during 2009 and 2010, and would fall to zero by 2017 as supplies ran out; and then the UK's Royal Institute for International Affairs warned that instability in Yemen could expand a zone of lawlessness from northern Kenya to Saudi Arabia, while describing Yemen's democracy as "fragile" and pointing to armed conflicts with Islamists and tribal insurgents as causes of instability. As a result, Western entities and other diplomats and leaders have an interest in maintaining Yemen's stability averting adverse outcomes. According to statistics published by the
Energy Information Administration,
crude oil output averaged in 2005, which was a reduction from in 2004. For the first eight months of 2006, crude oil output was flat, averaging . Following a minor discovery in 1982 in the south, an American company found an oil basin near
Ma'rib in 1984. A total of was produced there in 1995. A small oil refinery began operations near Ma'rib in 1986. A Soviet discovery in the
southern governorate of
Shabwah has proven only marginally successful even when taken over by a different group. A Western consortium began exporting oil from
Masila in the
Hadhramaut in 1993, and production there reached in 1999. There are new finds in the Jannah (formerly known as the Joint Oil Exploration Area) and east Shabwah blocks. Yemen's oil exports in 1995 earned about US$1 billion. Yemen's offshore oil and gas deposits are estimated to contain billions of barrels of oil and gas. Marib oil contains associated natural gas. In September 1995, the Yemeni Government signed an agreement that designated
TotalEnergies of France to be the lead company for a project for the export of liquefied natural gas (LNG). In 1997, Yemen Gas Company joined with various privately held companies to establish
Yemen LNG (YLNG). In August 2005, the government gave final approval to three LNG supply agreements, enabling YLNG to award a $2 billion contract to an international consortium to build the country's first liquefaction plant at Balhat on the
Arabian Sea coast. The project is a $3.7 billion investment over 25 years, producing approximately 6.7 million tons of LNG annually, with shipments likely to go to the United States and South Korea. Production of LNG began in October 2009. The Yemen government expects the LNG project to add $350 million to its budget and enable it to develop a petrochemicals industry.
Industry and manufacturing The US government estimates that Yemen's industrial sector constitutes 47.2 percent of gross domestic product (GDP). Together with services, construction, and commerce, industry accounts for less than 25 percent of the labor force. The largest contributor to the manufacturing sector's output is
oil refining, which generates roughly 40 percent of total revenue. The remainder of this sector consists of the production of consumer goods and construction materials. Manufacturing constituted approximately 9.5 percent of Yemen's GDP in 2005. In 2000 Yemen had almost 34,000 industrial establishments with a total of nearly 115,000 workers; the majority of the establishments were small businesses (one to four employees). Almost half of all industrial establishments are involved in processing food products and beverages; the production of flour and
cooking oil has increased in recent years. Approximately 10 percent of the establishments are classified as manufacturing mixed metal products, such as water-storage tanks, doors, and windows.
Services and tourism Economists have reported that Yemen's services sector constituted 51.7 percent of gross domestic product (GDP) in 2002 and 52.2 percent of GDP in 2003. The US government estimated that the services sector accounted for 39.7 percent of GDP in 2004 and 39.3 percent in 2005. Yemen's
tourism industry is hampered by both limited infrastructure and significant security concerns. The country's hotels and restaurants are below international standards, and air and road transportation is largely inadequate. Kidnappings of foreign tourists remain a threat, especially outside the main cities. Coupled with terrorist bombings at the Port of Aden in 2000 and 2002, the threat of kidnappings presents a significant deterrent to tourism. In September 2006, tribesmen in the Shabwa province, east of Sanaa, kidnapped four French tourists on their way to Aden; the tourists were freed two weeks later. In October 2006, the
U.S. Department of State reiterated warnings to U.S. citizens, strongly urging them to carefully consider the risks of traveling to Yemen. Britain's Foreign Office issued a similar advisory. However, the number of tourist arrivals rose to 274,000 in 2004 from 155,000 in 2003. == Labor ==