On 20 August 2005, an A330 aircraft was being operated on a scheduled passenger service from Narita International Airport, Japan, to Perth International Airport, Western Australia. The aircraft departed Narita at about 12:38 Coordinated Universal Time, with 13 crew and 181 passengers on board. At 14:05, while the aircraft was in cruise, the crew received an Electronic Centralized Aircraft Monitoring (ECAM) warning indicating that there was smoke in the forward cargo hold. The crew activated the fire extinguishing system, and diverted the aircraft to Kansai International Airport, Japan. At 15:51, immediately after the aircraft had landed, emergency services personnel reported that there appeared to be smoke in the vicinity of the nose landing gear. The flight crew initiated an emergency evacuation of the aircraft. During the evacuation, one passenger sustained serious injuries and eight passengers sustained minor injuries.5. During the evacuation, how many passengers on board were injured?