Air carrier Captain reported a safety concern highlighting uneven ramp asphalt near the gate stopping position; resulting in high thrust and jet blast in the ramp area to maneuver the aircraft to the stop point.

Narrative

Less than 10 feet from the stop line at gate XX in YYZ there is a divot in the asphalt where the left main tires of a larger aircraft would sit during parking. The ramp crew knows of the divot and marshaled our smaller Aircraft X to be parked beyond that divot. The plane; taxiing single engine; traveled through the divot and got stuck; rocking back and forth until settling in the bottom. It took 71% N1 on the running engine to provide enough power to get out of the divot; then immediate brake pressure was required to stop the plane from traveling beyond the marshaler's intended stop point. After conversing with the ramp crew; it is a known issue that the ramp does not have a permanent fix for. One ramp agent told the Captain that the marshaling beyond the painted stop point was intentional due to multiple tow bars that have been broken trying to push aircraft out of the divot. Cause: The airport uses asphalt as a continuous repair method for a reoccurring problem in that parking slot. The constant weight of aircraft continues to degrade the integrity of the pavement.Suggestions: That ramp area needs to be replaced with concrete or some kind of stronger pavement than asphalt to avoid this problem continuing through the winter months and into next year.