Monthly imports and supplier concentration
Explore monthly Crude oil import volumes, country-of-origin shares, leading suppliers and year-on-year changes. Compare Japan and South Korea over matching periods and test hypothetical supplier reductions.
Quantities use metric tonnes. National import values remain in the source currencies, JPY for Japan and USD for South Korea. Supplier means country of origin under customs rules. Source records and reconciliation reports accompany each dataset.
Japan monthly Crude oil imports by country of origin
Monthly Japan Crude oil import quantities in metric tonnes and import values in JPY, normalized from official customs statistics. Includes origin-country records, source references and independently reconciled national totals.
Download monthly observations CSV · Coverage and methodology · Official customs source