OCCIDENTAL PETROLEUM CORP revenue for the last year amounted to 479.95 B MXN, the most of which — 361.51 B MXN — came from its highest performing source at the moment, Oil and Gas, the year earlier bringing 529.84 B MXN. The greatest contribution to the revenue figure was made by United States — last year it brought OCCIDENTAL PETROLEUM CORP 420.14 B MXN, and the year before that — 624.54 B MXN.