Today there are 5 major religions that have been recognized by the state; Buddhism, Taoism, Protestantism, Catholicism, and Islam. Buddhism and folk religions account for roughly 21% of the population while Protestants make up 5% and Islam 1.6% of the population. A substantial number of Buddhists live in the southwestern Tibetan region of the country which borders Nepal, Bangladesh, and Bhutan and most notably India, the birthplace of Buddhism. The Islamic population, consisting mostly of Hui and Uighur Muslims, is concentrated in the northwestern Xinjiang region of the country which shares borders with Mongolia, Kazakhstan, Kyrgyzstan, Tajikistan, Afghanistan, Pakistan, India, and Russia. Chinese administrative geography was drawn mainly during the 1949 and 1954 administrative reorganizations. These reorganizations have been the source of much debate within China. In addition, a parcel of land was ceded from Guangdong to Guangxi to grant the latter immediate access to the Gulf of Tonkin, while Hainan was split from Guangdong in 1988 and Chongqing from Sichuan in 1997. As the country continues to industrialize, the share of agriculture as a part of China's GDP has lowered to 11% in recent years. Of the enormous labor force in China, 27.7% work in agriculture. China's primary agricultural import is wheat from Argentina, Australia, Canada, and France. They import about four to five million metric tons of wheat per year and they are able to buy the wheat for about $70 per ton, making wheat China's most important agricultural import. On the other hand, China's most important agricultural export is rice. China exports about 750,000 metric tons of rice per year for about $120 per ton. Other significant agricultural exports from China are potatoes, corn, tobacco, peanuts, tea, apples, cotton, pork, mutton, eggs, fish, and shrimp. According to the World Bank, as of 2015, China's total arable land was estimated at 119,000,000 hectares. Since 2005, arable land in China has been on the decline and the total arable land per citizen has reached .2 acres. As a percentage, agricultural land makes up about 54.7% of land. The climate of the country is difficult to describe because it varies so much depending on the region of China. The southernmost parts of the country are almost tropical, while the northernmost part is subarctic. The territory of China has been defined as a homeland for many different ethnic and racial groups in the country.