Table:
text: 1995 Italian Grand Prix
Race
Race
Driver Constructor_ Laps Time_Retired Grid
Rubens Barrichello Jordan - Peugeot 43 Clutch 6
Eddie Irvine Jordan - Peugeot 40 Engine 12
Gerhard Berger Ferrari 32 Suspension 3
Luca Badoer Minardi - Ford 26 Accident 18
Michael Schumacher Benetton - Renault 23 Collision 2
Damon Hill Williams - Renault 23 Collision 4
Olivier Panis Ligier - Mugen-Honda 20 Spun off 13
David Coulthard Williams - Renault 13 Spun off 1
Martin Brundle Ligier - Mugen-Honda 10 Puncture 11
Giovanni Lavaggi Pacific - Ford 6 Spun off 24
Pedro Lamy Minardi - Ford 0 Transmission 19
Andrea Montermini Pacific - Ford 0 Collision 21
Roberto Moreno Forti - Ford 0 Collision 22

Question: What is the average number of laps in the 1995 Italian Grand Prix when Gerhard Berger is the driver?