The main industries in Guyana are agro-processing (sugar, rice, timber, and coconut) and mining (gold and diamonds). There is a light-manufacturing sector, and textile and pharmaceuticals are produced by state and private companies. Manufacturing constituted 7.3 percent of the GDP in 1996. Manufacturing output declined at 3.9 percent annually between 1977 and 1987. The manufacturing sector then recovered through a government reform program and expanded at 8.8 percent annually between 1988 and 1998. About 75 percent of production is comprised of processing primary products (rice, coconut, sugar, bauxite, gold, diamonds, and timber). There are also many small workshops and factories producing flour, footwear, clothing, soap, cigarettes, and soft drinks. Mining and quarrying contributed about 16.5 percent of the GDP in 1996. Outdated equipment and the industry's indebtedness have hampered the bauxite/alumina industry.