I just want to assess the difficulty of hiking on K2 with historical perspective. So I want to know How many people tried to climb K2 and how many of them successfully climbed, How many died and how many were came back safe?
closed as off-topic by Rudy Gunawan, Dirty-flow, Geeo, Vince, RoflcoptrException♦ Oct 17 at 8:11
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According to this link there where 306 people climbing K2, 30 of which died. This would result in a fatality rate of ca. 10%. This table only includes actual successful ascents.
This list lists 80 fatalities including those who died during the ascent. I couldn't find any number of attempted ascents though.
On another note the success rate seems to have gotten higher those last years than in the past.