ONEOK INC revenue for the last year amounted to 20.96 B EUR, the most of which — 14.65 B EUR — came from its highest performing source at the moment, Natural Gas Liquids, the year earlier bringing 13.07 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought ONEOK INC 20.96 B EUR, and the year before that — 16.02 B EUR.