The MAIN PRIORITY is not killing people...
Agree but partially , because not injuring them is also an issue , and not wrecking air frames as well.
Accidents like the AF A340 in Toronto for instance will not be in this statistic and it was one major accident with some pax receiving serious injuries, a total write off and good lessons to learn from.
This survey defines Safety by applying some filters to prove their point , i.e to show the "first year" without passengers fatalities. (which is not really true also as it does not count GA , small regional OPS ) It excludes crew fatalities from that Stat at well .
So a good year , yes, but accident free , definitively not .