The last 12 months have been some of the deadliest in recent aviation history, with at least 5 incidents that killed more than 100 passengers.
The most recent was the crash of Germanwings Flight 9525 on March 24, which may have killed as many as 150 people.
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In terms of total fatalities, 2014 ran more than twice the 10-year average, according to data from the Flight Safety Foundation (which excludes military and corporate jets).