GULF KEYSTONE PETROLEUM LTD. revenue for the last year amounted to 111.90 M EUR, the most of which — 422.10 M EUR — came from its highest performing source at the moment, Oil and Gas, the year earlier bringing 260.63 M EUR. The greatest contribution to the revenue figure was made by Iraq — last year it brought GULF KEYSTONE PETROLEUM LTD. 422.10 M EUR, and the year before that — 260.63 M EUR.