GULF INTERNATIONAL SERVICES QPSC revenue for the last year amounted to 3.54 B QAR, the most of which — 1.33 B QAR — came from its highest performing source at the moment, Drilling, the year earlier bringing 1.28 B QAR. The greatest contribution to the revenue figure was made by Qatar — last year it brought GULF INTERNATIONAL SERVICES QPSC 1.93 B QAR, and the year before that — 3.67 B QAR.