Kenya's services sector, which contributes 61% of GDP, is dominated by tourism. The tourism sector has exhibited steady growth in most years since independence and by the late 1980s had become the country's principal source of foreign exchange. Tourists, the largest number being from Germany and the United Kingdom, are attracted mainly to the coastal beaches and the game reserves, notably, the expansive East and West Tsavo National Park 20,808 square kilometres (8,034 sq mi) in the southeast. Tourism has seen a substantial revival over the past several years and is the major contributor to the pick-up in the country's economic growth. Tourism is now Kenya's largest foreign exchange earning sector, followed by flowers, tea, and coffee. In 2006 tourism generated US$803 million, up from US$699 million the previous year. Presently, there are also numerous Shopping Malls in Kenya. In addition, there are four main hypermarket chains in Kenya.