 Originally the terminal was intended to house between 5 and 8 million passengers per year, but by 1991 the passenger numbers had skyrocketed to twelve million passengers per year, which was up to 50% to more than double the amount of passengers that the airport was originally designed to handle.Because the airport's taxiing system had been designed to be used as a smaller medium-size airport, it was unable to handle the large numbers of aircraft that used the airport.To continue operations preliminary annexes to the terminal were built, including a special hall for charter flights.