As Singapore's only real natural resource is its deep-water port, it depends on its reputation for having a government that's free of corruption and a skilled, highly educated workforce. There is a shortage of lower-skilled workers in the construction and electronics sectors and in the service industry, but this is largely made up for by the importation of foreign workers. Singapore 's economy relies heavily on manufacturing and financial business services. With an eye on the burgeoning threat from China, Singapore is shifting its priorities from low-end electronics to more specialist sectors such as marine-engineering, chemical and biotechnology industries, and private banking for the wealthy. Unemployment is a low: 3.10% (2007).