The Singaporean economy depends heavily on exports and refining imported goods, especially in manufacturing,[77] which constituted 27.2% of GDP in 2010[6] and includes significant electronics, petroleum refining, chemicals, mechanical engineering and biomedical sciences sectors. In 2006 Singapore produced about 10% of the world's foundry wafer output.[78] Despite its small size, Singapore has a diversified economy, a strategy that the government considers vital for growth and stability.