Agriculture in Thailand is highly competitive, diversified and specialized and its exports are very successful internationally. Rice is the country's most important crop, with some 60 percent of Thailand's 13 million farmers growing it on almost half of Thailand's cultivated land. Thailand is a major exporter in the world rice market. Rice exports in 2014 amounted to 1.3 percent of GDP. Agricultural production as a whole accounts for an estimated 9-10.5 percent of Thai GDP. Forty percent of the population work in agriculture-related jobs. The farmland they work was valued at US$2,945 per rai (0.395 acre; 0.16 ha) in 2013. Most Thai farmers own fewer than eight hectares (50 rai) of land.