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This counts number of travels taken, not unique people. If you took 3 flights that year, you would count as 3 passengers in that statistic.
by Etheryte 6y ago
This counts number of travels taken, not unique people. If you took 3 flights that year, you would count as 3 passengers in that statistic.
- deleted 6y ago[deleted]
- SamBam 6y agoRight. So one source saying 4.5 billion passengers, and one saying 800 million unique passengers. Those numbers look at least roughly reasonable in comparison with each other. If the "average" passenger took 5 flights, then that adds up 4 billion passenger-flights. So the fat tail can be caused by the outliers taking dozens of flights.