About 75 percent of employment is in the service sector, 15 percent in manufacturing and construction, and 8 per cent in agriculture and forestry and fishing. The most important industry is transport, especially shipping, with 20 percent of employment. Ever since 1865, Åland vessels have been operating the world seas. Tourism has grown sharply; trade, hotel and restaurant operations employ 12 percent of the workforce. In the manufacturing, the food industry is the largest with 3 percent of the workforce. In the archipelago municipalities, the most important industries are fishing and agriculture with 33 percent and tourism with 10 percent of the labor force. In general, the business sector in Åland is characterized by the large number of small companies, apart from the shipping companies. Åland is a zone of tax-free trade within the EU.