The Singapore Economic Development Board (EDB) continues to attract investment funds on a large-scale for the country despite the city's relatively high-cost operating environment. The US leads in foreign investment, accounting for 40% of new commitments to the manufacturing sector in 2000. As of 1999, cumulative investment for manufacturing and services by American companies in Singapore reached approximately $20 billion (total assets). The bulk of US investment is in electronics manufacturing, oil refining and storage, and the chemical industry. More than 1,500 US firms operate in Singapore.