Table:
text: 1968 Dutch Grand Prix
Race
Race
Driver Constructor_ Laps Time_Retired Grid
Jackie Stewart Matra - Ford 90 2:46:11.2 5
Jean-Pierre Beltoise Matra 90 + 1:33.93 16
Pedro Rodríguez BRM 89 + 1 Lap 11
Jacky Ickx Ferrari 88 + 2 Laps 6
Silvio Moser Brabham - Repco 87 + 3 Laps 17
Chris Amon Ferrari 85 + 5 Laps 1
Richard Attwood BRM 85 + 5 Laps 15
Jo Bonnier McLaren - BRM 82 + 8 Laps 19
Graham Hill Lotus - Ford 81 Accident 3
Jackie Oliver Lotus - Ford 80 Not Classified 10
Dan Gurney Brabham - Repco 63 Throttle 12
Jo Siffert Lotus - Ford 55 Gearbox 13

Question: What is the highest lap count for Chris Amon during the 1968 Dutch Grand Prix?