news.aviation-safety.net/2017/12/30/preliminary-asn-data-show-2017-safest-year-aviation-history/
five were passenger flights
aviation-safety.net/database/hpbarometer_gallery.php?year=2017
docs.google.com/spreadsheets/d/1SDp7p1y6m7N5xD5_fpOkYOrJvd68V7iy6etXy2cetb8/
to70.com/to70s-civil-aviation-safety-review-2017/