Table:
text: 1973 Canadian Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Peter Revson McLaren - Ford 80 1:59:04.083 2
Emerson Fittipaldi Lotus - Ford 80 + 32.734 5
Jackie Oliver Shadow - Ford 80 + 34.505 14
Jean-Pierre Beltoise BRM 80 + 36.514 16
Jackie Stewart Tyrrell - Ford 79 + 1 Lap 9
Howden Ganley Iso Marlboro - Ford 79 + 1 Lap 22
James Hunt March - Ford 78 + 2 Laps 15
Carlos Reutemann Brabham - Ford 78 + 2 Laps 4
Mike Hailwood Surtees - Ford 78 + 2 Laps 12
Chris Amon Tyrrell - Ford 77 + 3 Laps 11

Question: If driver Mike Hailwood has a starting grid of more than 12 and a time/retirement of +2 laps, what is the average number of laps in the 1973 Canadian Grand Prix?