Peruvian economic performance has been tied to exports, which provide hard currency to finance imports and external debt payments. Peru's main exports are copper, gold, zinc, textiles, chemicals, pharmaceuticals, manufactures, machinery, services and fish meal; its major trade partners are the United States, China, Brazil, European Union and Chile. Although exports have provided substantial revenue, self-sustained growth and a more egalitarian distribution of income have proven elusive. Services account for 59.9% of Peruvian gross domestic product, followed by industry (32.7%) and agriculture (7.6%). Recent economic growth has been fueled by macroeconomic stability, improved terms of trade, as well as rising investment and consumption.