ONEOK revenue for the last year amounted to 16.02 B EUR, the most of which — 13.07 B EUR — came from its highest performing source at the moment, Natural Gas Liquids, the year earlier bringing 17.82 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought ONEOK 16.02 B EUR, and the year before that — 20.92 B EUR.