Finland is a free market economy that is highly dependent on international trade. Its key economic sector is manufacturing notably the wood, metals, engineering, telecommunications, and electronics industries. Forestry, an important export earner, provides a secondary occupation for the rural population. A major portion of the countrys revenue is generated from the export of goods and services. Business services, data processing, and transportation are all key service industries, with expansion in business and financial services especially driven by new technological developments, expanding into Internet and Internet Technology (IT)-based services. Finlands Nokia is the largest mobile phone manufacturer company in the world. Finland has trade relations with Germany, USA, UK, Denmark and Sweden.