COLLIERS INTL GROUP INC revenue for the last year amounted to 5.84 B CAD, the most of which — 1.43 B CAD — came from its highest performing source at the moment, Leasing, the year earlier bringing 1.46 B CAD. The greatest contribution to the revenue figure was made by United States — last year it brought COLLIERS INTL GROUP INC 3.19 B CAD, and the year before that — 3.31 B CAD.