Nauru's only export is phosphate rock, with most going to Australia and New Zealand. The value of exports fluctuates as world phosphate prices rise or decline. Imports consist of pretty much everything, including machinery and construction materials for the phosphate industry, food, fresh water (from Australia), fuel, and other necessities. About half of the imports come from Australia, and almost all the rest from New Zealand, the UK, and Japan. Virtually all manufactured goods must be imported.