The ''Bahraini Economic Vision 2030'' published in 2008 does not indicate how the stated goal of shifting from an economy built on oil wealth to a productive, globally competitive economy will be attained. Bahrain has already diversified its exports to some extent, out of necessity. It has the smallest hydrocarbon reserves of any Persian Gulf state, producing 48,000 barrels per day from its one onshore field. The bulk of the country's revenue comes from its share in the offshore field administered by Saudi Arabia. The gas reserve in Bahrain is expected to last for less than 27 years, leaving the country with few sources of capital to pursue the development of new industries. Investment in research and development remained very low in 2013.