Sweden has an economy heavily oriented toward foreign trade with timber, hydro-power, and iron ore constituting its resource base. Engineering sector accounts for about 50 percent of output and exports. On the expenditure side, household consumption is the main component of GDP and accounts for 46 percent of its total use, followed by government consumption (26 percent) and gross fixed capital formation (23 percent). Exports of goods and services account for 45 percent of GDP while imports account for 41 percent, adding 4 percent of total GDP.